Malaysia has asserted sovereignty over the Spratly Islands together

with China, Philippines, Taiwan, Vietnam, and possibly Brunei; while

the 2002 "Declaration on the Conduct of Parties in the South China

Sea" has eased tensions over the Spratly Islands, it is not the

legally binding "code of conduct" sought by some parties; Malaysia

was not party to the March 2005 joint accord among the national oil

companies of China, the Philippines, and Vietnam on conducting

marine seismic activities in the Spratly Islands; disputes continue

over deliveries of fresh water to Singapore, Singapore's land

reclamation, bridge construction, and maritime boundaries in the

Johor and Singapore Straits; in November 2007, the ICJ will hold

public hearings in response to the memorials and countermemorials

filed by the parties in 2003 and 2005 over sovereignty of Pedra

Branca Island/Pulau Batu Puteh, Middle Rocks and South Ledge; ICJ

awarded Ligitan and Sipadan islands, also claimed by Indonesia and

Philippines, to Malaysia but left maritime boundary and sovereignty

of Unarang rock in the hydrocarbon-rich Celebes Sea in dispute;

separatist violence in Thailand's predominantly Muslim southern

provinces prompts measures to close and monitor border with Malaysia

to stem terrorist activities; Philippines retains a dormant claim to

Malaysia's Sabah State in northern Borneo; Brunei and Malaysia

agreed in September 2008 to resolve their offshore and deepwater

seabed dispute, resume hydrocarbon exploration and renounce any

territorial claims on land; piracy remains a problem in the Malacca

Strait

Refugees and internally displaced persons:

refugees (country of origin): 15,174 (Indonesia); 21,544 (Burma)

(2007)

Trafficking in persons:

current situation: Malaysia is a destination and, to a lesser

extent, a source and transit country for women and children

trafficked for the purpose of commercial sexual exploitation, and

men, women, and children for forced labor; Malaysia is mainly a

destination country for men, women, and children who migrate

willingly from South and Southeast Asia to work, some of whom are

subjected to conditions of involuntary servitude by Malaysian

employers in the domestic, agricultural, construction, plantation,

and industrial sectors; to a lesser extent, some Malaysian women,

primarily of Chinese ethnicity, are trafficked abroad for commercial

sexual exploitation

tier rating: Tier 2 Watch List - Malaysia improved from Tier 3 to

the Tier 2 Watch List for 2008 when it enacted comprehensive

anti-trafficking legislation in July 2007; however, it did not take

action against exploitative employers or labor traffickers in 2007;

the government has not ratified the 2000 UN TIP Protocol (2008)

Illicit drugs:

drug trafficking prosecuted vigorously and carries severe penalties;

heroin still primary drug of abuse, but synthetic drug demand

remains strong; continued ecstasy and methamphetamine producer for

domestic users and, to a lesser extent, the regional drug market

page last updated on November 11, 2009

======================================================================

@Maldives (South Asia)

Introduction ::Maldives

Background:

The Maldives was long a sultanate, first under Dutch and then under

British protection. It became a republic in 1968, three years after

independence. President Maumoon Abdul GAYOOM dominated the islands'

political scene for 30 years, elected to six successive terms by

single-party referendums. Following riots in the capital Male in

August 2004, the president and his government pledged to embark upon

democratic reforms including a more representative political system

and expanded political freedoms. Progress was sluggish, however, and

many promised reforms were slow to be realized. Nonetheless,

political parties were legalized in 2005. In June 2008, a

constituent assembly - termed the "Special Majlis" - finalized a new

constitution, which was ratified by the president in August. The

first-ever presidential elections under a multi-candidate,

multi-party system were held in October 2008. GAYOOM was defeated in

a runoff poll by Mohamed NASHEED, a political activist who had been

jailed several years earlier by the former regime. Challenges facing

the new president include strengthening democracy and combating

poverty and drug abuse.

Geography ::Maldives

Location:

Southern Asia, group of atolls in the Indian Ocean, south-southwest

of India

Geographic coordinates:

3 15 N, 73 00 E

Map references:

Asia

Area:

total: 298 sq km

country comparison to the world: 209

land: 298 sq km

water: 0 sq km

Area - comparative:

about 1.7 times the size of Washington, DC

Land boundaries:

0 km

Coastline:

644 km

Maritime claims:

measured from claimed archipelagic straight baselines

territorial sea: 12 nm

contiguous zone: 24 nm

exclusive economic zone: 200 nm

Climate:

tropical; hot, humid; dry, northeast monsoon (November to March);

rainy, southwest monsoon (June to August)

Terrain:

flat, with white sandy beaches

Elevation extremes:

lowest point: Indian Ocean 0 m

highest point: unnamed location on Wilingili island in the Addu

Atoll 2.4 m

Natural resources:

fish

Land use:

arable land: 13.33%

permanent crops: 30%

other: 56.67% (2005)

Irrigated land:

NA

Total renewable water resources:

0.03 cu km (1999)

Freshwater withdrawal (domestic/industrial/agricultural):

total: 0.003 cu km/yr (98%/2%/0%)

per capita: 9 cu m/yr (1987)

Natural hazards:

tsunamis; low elevation of islands makes them sensitive to sea level

rise

Environment - current issues:

depletion of freshwater aquifers threatens water supplies; global

warming and sea level rise; coral reef bleaching

Environment - international agreements:

party to: Biodiversity, Climate Change, Climate Change-Kyoto

Protocol, Desertification, Hazardous Wastes, Law of the Sea, Ozone

Layer Protection, Ship Pollution

signed, but not ratified: none of the selected agreements

Geography - note:

1,190 coral islands grouped into 26 atolls (200 inhabited islands,

plus 80 islands with tourist resorts); archipelago with strategic

location astride and along major sea lanes in Indian Ocean

People ::Maldives

Population:

396,334 (July 2009 est.)

country comparison to the world: 174

Age structure:

0-14 years: 22.3% (male 45,038/female 43,291)

15-64 years: 73.8% (male 180,874/female 111,703)

65 years and over: 3.9% (male 7,711/female 7,717) (2009 est.)

Median age:

total: 25.7 years

male: 26.5 years

female: 24.3 years (2009 est.)

Population growth rate:

-0.168% (2009 est.)

country comparison to the world: 217

Birth rate:

14.55 births/1,000 population (2009 est.)

country comparison to the world: 145

Death rate:

3.65 deaths/1,000 population (July 2009 est.)

country comparison to the world: 212

Net migration rate:

-12.58 migrant(s)/1,000 population (2009 est.)

country comparison to the world: 179

Urbanization:

urban population: 38% of total population (2008)

rate of urbanization: 5.3% annual rate of change (2005-10 est.)

Sex ratio:

at birth: 1.05 male(s)/female

under 15 years: 1.04 male(s)/female

15-64 years: 1.62 male(s)/female

65 years and over: 1 male(s)/female

total population: 1.44 male(s)/female (2009 est.)

Infant mortality rate:

total: 29.53 deaths/1,000 live births

country comparison to the world: 77

male: 32.04 deaths/1,000 live births

female: 26.89 deaths/1,000 live births (2009 est.)

Life expectancy at birth:

total population: 73.97 years

country comparison to the world: 94

male: 71.78 years

female: 76.28 years (2009 est.)

Total fertility rate:

1.9 children born/woman (2009 est.)

country comparison to the world: 144

HIV/AIDS - adult prevalence rate:

0.1% (2001 est.)

country comparison to the world: 147

HIV/AIDS - people living with HIV/AIDS:

fewer than 100 (2001 est.)

country comparison to the world: 163

HIV/AIDS - deaths:

NA

Nationality:

noun: Maldivian(s)

adjective: Maldivian

Ethnic groups:

South Indians, Sinhalese, Arabs

Religions:

Sunni Muslim

Languages:

Maldivian Dhivehi (dialect of Sinhala, script derived from Arabic),

English spoken by most government officials

Literacy:

definition: age 15 and over can read and write

total population: 96.3%

male: 96.2%

female: 96.4% (2000 census)

School life expectancy (primary to tertiary education):

total: 12 years

male: 12 years

female: 12 years (2006)

Education expenditures:

8% of GDP (2006)

country comparison to the world: 15

Government ::Maldives

Country name:

conventional long form: Republic of Maldives

conventional short form: Maldives

local long form: Dhivehi Raajjeyge Jumhooriyyaa

local short form: Dhivehi Raajje

Government type:

republic

Capital:

name: Male

geographic coordinates: 4 10 N, 73 30 E

time difference: UTC+5 (10 hours ahead of Washington, DC during

Standard Time)

Administrative divisions:

19 atolls (atholhu, singular and plural) and 1 capital city*; Alifu,

Baa, Dhaalu, Faafu, Gaafu Alifu, Gaafu Dhaalu, Gnaviyani, Haa Alifu,

Haa Dhaalu, Kaafu, Laamu, Lhaviyani, Maale* (Male), Meemu, Noonu,

Raa, Seenu, Shaviyani, Thaa, Vaavu

Independence:

26 July 1965 (from the UK)

National holiday:

Independence Day, 26 July (1965)

Constitution:

new constitution ratified 7 August 2008

Legal system:

based on Islamic law with admixtures of English common law primarily

in commercial matters; has not accepted compulsory ICJ jurisdiction

Suffrage:

21 years of age; universal

Executive branch:

chief of state: President Mohamed "Anni" NASHEED (since 11 November

2008); Vice President Mohamed WAHEED Hassan Maniku (since 11

November 2008); note - the president is both the chief of state and

head of government

head of government: President Mohamed "Anni" NASHEED (since 11

November 2008); Vice President Mohamed WAHEED Hassan Maniku (since

11 November 2008)

cabinet: Cabinet of Ministers appointed by the president

elections: under the new constitution, the president is elected by

direct vote; president elected for a five-year term (eligible for a

second term); election last held 8 and 28 October 2008 (next to be

held in 2013)

election results: Mohamed NASHEED elected president; percent of vote

- NASHEED 54.25%, Maumoon Abdul GAYOOM 45.75%

Legislative branch:

unicameral People's Council or People's Majlis (77 seats; members

elected by direct vote to serve five-year terms); note - the Majlis

in February 2009 passed legislation that incresed the number of

seats to 77 from 50

elections: last held 9 May 2009 (next to be held in 2014)

election results: percent of vote - DRP 36.8%, MDP 32.9 %, PA 9.2%,

DQP 2.6% AP 1.3%, independents 17.1%; seats by party - DRP 28, MDP

25, PA 7, DQP 2, AP 1, independents 13; note - one seat unfilled

Judicial branch:

Supreme Court; Supreme Court judges are appointed by the president

with approval of voting members of the People's Council; High Court;

Trial Courts; all lower court judges are appointed by the Judicial

Service Commission

Political parties and leaders:

Adhaalath (Justice) Party or AP [Abdul Majeed Abdul BARI]; Dhivehi

Quamee Party or DQP [Hassan SAEED]; Dhivehi Rayyithunge Party

(Maldivian People's Party) or DRP [Maumoon Abdul GAYOOM]; Islamic

Democratic Party or IDP [Omar NASEER]; Maldivian Democratic Party or

MDP [Mohamed NASHEED]; People's Alliance or PA [Abdullah YAMEEN];

Republican (Jumhooree) Party [Gasim IBRAHIM]; Social Liberal Party

or SLP [Ibrahim ISMAIL]

Political pressure groups and leaders:

other: various unregistered political parties

International organization participation:

ADB, C, CP, FAO, G-77, IBRD, ICAO, IDA, IDB, IFAD, IFC, IMF, IMO,

Interpol, IOC, IPU, ITU, MIGA, NAM, OIC, OPCW, SAARC, SACEP, UN,

UNCTAD, UNESCO, UNIDO, UNWTO, UPU, WCO, WFTU, WHO, WIPO, WMO, WTO

Diplomatic representation in the US:

chief of mission: Ambassador (vacant); Charge D'Affaires Abdul

Ghafoor MOHAMED

chancery: 800 2nd Avenue, Suite 400E, New York, NY 10017

telephone: [1] (212) 599-6195

FAX: [1] (212) 661-6405

Diplomatic representation from the US:

the US does not have an embassy in Maldives; the US Ambassador to

Sri Lanka, Ambassador Robert O. BLAKE, Jr., is accredited to

Maldives and makes periodic visits

Flag description:

red with a large green rectangle in the center bearing a vertical

white crescent; the closed side of the crescent is on the hoist side

of the flag

Economy ::Maldives

Economy - overview:

Tourism, Maldives' largest industry, accounts for 28% of GDP and

more than 60% of foreign exchange receipts. Over 90% of government

tax revenue comes from import duties and tourism-related taxes.

Fishing is the second leading sector. Agriculture and manufacturing

continue to play a lesser role in the economy, constrained by the

limited availability of cultivable land and the shortage of domestic

labor. Most staple foods must be imported. Industry, which consists

mainly of garment production, boat building, and handicrafts,

accounts for about 7% of GDP. The Maldivian Government began an

economic reform program in 1989 initially by lifting import quotas

and opening some exports to the private sector. Subsequently, it has

liberalized regulations to allow more foreign investment. Real GDP

growth averaged over 7.5% per year for more than a decade. In late

December 2004, a major tsunami left more than 100 dead, 12,000

displaced, and property damage exceeding $300 million. As a result

of the tsunami, the GDP contracted by about 4.6% in 2005. A rebound

in tourism, post-tsunami reconstruction, and development of new

resorts helped the economy recover quickly, with GDP growth

registering 18% in 2006. Growth slowed in 2007-08, but remained

above 5% per year. The trade deficit expanded sharply as a result of

high oil prices and imports of construction material. Government

spending on social needs, subsidies, and civil servant salaries have

created a large budget deficit and inflation has picked up sharply,

reaching nearly 13% in October 2008 due to high oil and food prices.

Diversifying beyond tourism and fishing, reforming public finance,

and increasing employment are the major challenges facing the

government. Over the longer term Maldivian authorities worry about

the impact of erosion and possible global warming on their low-lying

country; 80% of the area is 1 meter or less above sea level.

GDP (purchasing power parity):

$1.723 billion (2008 est.)

country comparison to the world: 187

$1.628 billion (2007 est.)

$1.519 billion (2006 est.)

note: data are in 2008 US dollars

GDP (official exchange rate):

$1.261 billion (2008 est.)

GDP - real growth rate:

5.8% (2008 est.)

country comparison to the world: 69

7.2% (2007 est.)

18% (2006 est.)

GDP - per capita (PPP):

$4,500 (2008 est.)

country comparison to the world: 149

$4,500 (2007 est.)

$4,400 (2006 est.)

note: data are in 2008 US dollars

GDP - composition by sector:

agriculture: 7%

industry: 17%

services: 76% (2006 est.)

Labor force:

136,100 (2007)

country comparison to the world: 172

Labor force - by occupation:

agriculture: 22%

industry: 18%

services: 60% (1995)

Unemployment rate:

14.4% (2006 est.)

country comparison to the world: 151

Population below poverty line:

21% (2004)

Household income or consumption by percentage share:

lowest 10%: NA%

highest 10%: NA%

Budget:

revenues: $762 million (including foreign grants)

expenditures: $884 million (2008 est.)

Inflation rate (consumer prices):

12.8% (October 2008 est.)

country comparison to the world: 178

5% (2007 est.)

Central bank discount rate:

13% (31 December 2008)

country comparison to the world: 22

12.5% (31 December 2007)

Commercial bank prime lending rate:

13% (31 December 2008)

country comparison to the world: 60

13% (31 December 2007)

Stock of money:

$475.2 million (31 December 2008)

country comparison to the world: 96

$344.1 million (31 December 2007)

Stock of quasi money:

$487.8 million (31 December 2008)

country comparison to the world: 108

$434.9 million (31 December 2007)

Stock of domestic credit:

$1.548 billion (31 December 2008)

country comparison to the world: 97

$1.08 billion (31 December 2007)

Market value of publicly traded shares:

$NA

Agriculture - products:

coconuts, corn, sweet potatoes; fish

Industries:

tourism, fish processing, shipping, boat building, coconut

processing, garments, woven mats, rope, handicrafts, coral and sand

mining

Industrial production growth rate:

-0.9% (2004 est.)

country comparison to the world: 141

Electricity - production:

205 million kWh (2007 est.)

country comparison to the world: 176

Electricity - consumption:

190.7 million kWh (2007 est.)

country comparison to the world: 178

Electricity - exports:

0 kWh (2008 est.)

Electricity - imports:

0 kWh (2008 est.)

Oil - production:

0 bbl/day (2008 est.)

country comparison to the world: 160

Oil - consumption:

6,000 bbl/day (2008 est.)

country comparison to the world: 159

Oil - exports:

0 bbl/day (2007 est.)

country comparison to the world: 180

Oil - imports:

5,406 bbl/day (2007 est.)

country comparison to the world: 154

Oil - proved reserves:

0 bbl (1 January 2009 est.)

country comparison to the world: 155

Natural gas - production:

0 cu m (2008 est.)

country comparison to the world: 150

Natural gas - consumption:

0 cu m (2008 est.)

country comparison to the world: 150

Natural gas - exports:

0 cu m (2008)

country comparison to the world: 147

Natural gas - imports:

0 cu m (2008 est.)

country comparison to the world: 90

Natural gas - proved reserves:

0 cu m (1 January 2009 est.)

country comparison to the world: 157

Current account balance:

-$638 million (2008 est.)

country comparison to the world: 109

-$472 million (2007 est.)

Exports:

$113 million (2008 est.)

country comparison to the world: 191

$167 million (2006 est.)

Exports - commodities:

fish

Exports - partners:

Thailand 34.4%, UK 13.8%, France 12.2%, Italy 9%, Sri Lanka 8.5%

(2008)

Imports:

$1.276 billion (2008 est.)

country comparison to the world: 168

$930 million (2006 est.)

Imports - commodities:

petroleum products, ships, foodstuffs, clothing, intermediate and

capital goods

Imports - partners:

Singapore 27.2%, UAE 16.9%, Malaysia 9.7%, India 7.7%, Thailand

4.9%, Sri Lanka 4.6%, Germany 4.1% (2008)

Debt - external:

$477 million (2008 est.)

country comparison to the world: 166

$482 million (2006 est.)

Exchange rates:

rufiyaa (MVR) per US dollar - 12.8 (2008), 12.8 (2007), 12.8 (2006),

12.8 (2005), 12.8 (2004)

Communications ::Maldives

Telephones - main lines in use:

50,396 (2009)

country comparison to the world: 162

Telephones - mobile cellular:

450,500 (2009)

country comparison to the world: 158

Telephone system:

general assessment: telephone services have improved; each island

now has at least 1 public telephone, and there are mobile cellular

networks with a rapidly expanding subscribership that exceeds 100

per 100 persons

domestic: interatoll communication through microwave links; all

inhabited islands and resorts are connected with telephone and fax

service

international: country code - 960; linked to international submarine

cable Fiber-Optic Link Around the Globe (FLAG); satellite earth

station - 3 Intelsat (Indian Ocean) (2009)

Radio broadcast stations:

AM 1, FM 1, shortwave 1 (1998)

Television broadcast stations:

1 (2006)

Internet country code:

.mv

Internet hosts:

1,732 (2009)

country comparison to the world: 151

Internet users:

71,700 (2008)

country comparison to the world: 164

Transportation ::Maldives

Airports:

5 (2009)

country comparison to the world: 180

Airports - with paved runways:

total: 3

over 3,047 m: 1

2,438 to 3,047 m: 1

914 to 1,523 m: 1 (2009)

Airports - with unpaved runways:

total: 2

914 to 1,523 m: 2 (2009)

Roadways:

total: 88 km

country comparison to the world: 213

paved roads: 88 km - 60 km in Male; 14 km on Addu Atolis; 14 km on

Laamu

note: village roads are mainly compacted coral (2006)

Merchant marine:

total: 29

country comparison to the world: 86

by type: bulk carrier 1, cargo 23, petroleum tanker 3, refrigerated

cargo 2

foreign-owned: 1 (Greece 1)

registered in other countries: 2 (Panama 1, Tuvalu 1) (2008)

Ports and terminals:

Male

Military ::Maldives

Military branches:

Maldives National Defense Force (MNDF): Rapid Reaction Force,

Security Protection Group, Coast Guard (2009)

Military service age and obligation:

18 years of age for voluntary military service; no conscription

(2008)

Manpower available for military service:

males age 16-49: 89,505

females age 16-49: 85,745 (2008 est.)

Manpower fit for military service:

males age 16-49: 138,746

females age 16-49: 82,247 (2009 est.)

Manpower reaching militarily significant age annually:

male: 4,576

female: 3,942 (2009 est.)

Military expenditures:

5.5% of GDP (2005 est.)

country comparison to the world: 15

Military - note:

the Maldives National Defense Force (MNDF), with its small size and

with little serviceable equipment, is inadequate to prevent external

aggression and is primarily tasked to reinforce the Maldives Police

Service (MPS) and ensure security in the exclusive economic zone

(2008)

Transnational Issues ::Maldives

Disputes - international:

none

Refugees and internally displaced persons:

IDPs: 1,000-10,000 (December 2004 tsunami victims) (2007)

page last updated on November 11, 2009

======================================================================

@Mali (Africa)

Introduction ::Mali

Background:

The Sudanese Republic and Senegal became independent of France in

1960 as the Mali Federation. When Senegal withdrew after only a few

months, what formerly made up the Sudanese Republic was renamed

Mali. Rule by dictatorship was brought to a close in 1991 by a

military coup - led by the current president Amadou TOURE - enabling

Mali's emergence as one of the strongest democracies on the

continent. President Alpha KONARE won Mali's first democratic

presidential election in 1992 and was reelected in 1997. In keeping

with Mali's two-term constitutional limit, KONARE stepped down in

2002 and was succeeded by Amadou TOURE, who was subsequently elected

to a second term in 2007. The elections were widely judged to be

free and fair.

Geography ::Mali

Location:

Western Africa, southwest of Algeria

Geographic coordinates:

17 00 N, 4 00 W

Map references:

Africa

Area:

total: 1,240,192 sq km

country comparison to the world: 24

land: 1,220,190 sq km

water: 20,002 sq km

Area - comparative:

slightly less than twice the size of Texas

Land boundaries:

total: 7,243 km

border countries: Algeria 1,376 km, Burkina Faso 1,000 km, Guinea

858 km, Cote d'Ivoire 532 km, Mauritania 2,237 km, Niger 821 km,

Senegal 419 km

Coastline:

0 km (landlocked)

Maritime claims:

none (landlocked)

Climate:

subtropical to arid; hot and dry (February to June); rainy, humid,

and mild (June to November); cool and dry (November to February)

Terrain:

mostly flat to rolling northern plains covered by sand; savanna in

south, rugged hills in northeast

Elevation extremes:

lowest point: Senegal River 23 m

highest point: Hombori Tondo 1,155 m

Natural resources:

gold, phosphates, kaolin, salt, limestone, uranium, gypsum, granite,

hydropower

note: bauxite, iron ore, manganese, tin, and copper deposits are

known but not exploited

Land use:

arable land: 3.76%

permanent crops: 0.03%

other: 96.21% (2005)

Irrigated land:

2,360 sq km (2003)

Total renewable water resources:

100 cu km (2001)

Freshwater withdrawal (domestic/industrial/agricultural):

total: 6.55 cu km/yr (9%/1%/90%)

per capita: 484 cu m/yr (2000)

Natural hazards:

hot, dust-laden harmattan haze common during dry seasons; recurring

droughts; occasional Niger River flooding

Environment - current issues:

deforestation; soil erosion; desertification; inadequate supplies of

potable water; poaching

Environment - international agreements:

party to: Biodiversity, Climate Change, Climate Change-Kyoto

Protocol, Desertification, Endangered Species, Hazardous Wastes, Law

of the Sea, Ozone Layer Protection, Wetlands, Whaling

signed, but not ratified: none of the selected agreements

Geography - note:

landlocked; divided into three natural zones: the southern,

cultivated Sudanese; the central, semiarid Sahelian; and the

northern, arid Saharan

People ::Mali

Population:

12,666,987 (July 2009 est.)

country comparison to the world: 70

Age structure:

0-14 years: 48.3% (male 3,089,406/female 3,023,341)

15-64 years: 48.7% (male 3,065,167/female 3,101,914)

65 years and over: 3.1% (male 151,718/female 235,441) (2009 est.)

Median age:

total: 15.8 years

male: 15.5 years

female: 16.2 years (2009 est.)

Population growth rate:

2.765% (2009 est.)

country comparison to the world: 19

Birth rate:

49.15 births/1,000 population (2009 est.)

country comparison to the world: 2

Death rate:

15.82 deaths/1,000 population (July 2009 est.)

country comparison to the world: 17

Net migration rate:

-5.67 migrant(s)/1,000 population (2009 est.)

country comparison to the world: 166

Urbanization:

urban population: 32% of total population (2008)

rate of urbanization: 4.8% annual rate of change (2005-10 est.)

The 2009 CIA World Factbook · 第 121 / 439 段