Background:
North Yemen became independent of the Ottoman Empire in 1918. The
British, who had set up a protectorate area around the southern port
of Aden in the 19th century, withdrew in 1967 from what became South
Yemen. Three years later, the southern government adopted a Marxist
orientation. The massive exodus of hundreds of thousands of Yemenis
from the south to the north contributed to two decades of hostility
between the states. The two countries were formally unified as the
Republic of Yemen in 1990. A southern secessionist movement in 1994
was quickly subdued. In 2000, Saudi Arabia and Yemen agreed to a
delimitation of their border.

Geography Yemen

Location:
Middle East, bordering the Arabian Sea, Gulf of Aden, and Red Sea,
between Oman and Saudi Arabia

Geographic coordinates:
15 00 N, 48 00 E

Map references:
Middle East

Area:
total: 527,970 sq km
land: 527,970 sq km
note: includes Perim, Socotra, the former Yemen Arab Republic (YAR
or North Yemen), and the former People's Democratic Republic of
Yemen (PDRY or South Yemen)
water: 0 sq km

Area - comparative:
slightly larger than twice the size of Wyoming

Land boundaries: total: 1,746 km border countries: Oman 288 km, Saudi Arabia 1,458 km

Coastline:
1,906 km

Maritime claims:
contiguous zone: 24 NM
territorial sea: 12 NM
continental shelf: 200 NM or to the edge of the continental margin
exclusive economic zone: 200 NM