outhern Ocean
the major chokepoint is the Drake Passage between
South America and Antarctica; the Polar Front (Antarctic
Convergence) is the best natural definition of the northern extent
of the Southern Ocean; it is a distinct region at the middle of the
Antarctic Circumpolar Current that separates the cold polar surface
waters to the south from the warmer waters to the north; the Front
and the Current extend entirely around Antarctica, reaching south of
60 degrees south near New Zealand and near 48 degrees south in the
far South Atlantic coinciding with the path of the maximum westerly
winds

Spain
strategic location along approaches to Strait of Gibraltar

Spratly Islands
strategically located near several primary shipping
lanes in the central South China Sea; includes numerous small
islands, atolls, shoals, and coral reefs

Sri Lanka
strategic location near major Indian Ocean sea lanes

Sudan
largest country in Africa; dominated by the Nile and its
tributaries

Suriname
smallest independent country on South American continent;
mostly tropical rain forest; great diversity of flora and fauna
that, for the most part, is increasingly threatened by new
development; relatively small population, mostly along the coast

Svalbard
northernmost part of the Kingdom of Norway; consists of
nine main islands; glaciers and snowfields cover 60% of the total
area; Spitsbergen Island is the site of the Svalbard Global Seed
Vault, a seed repository established by the Global Crop Diversity
Trust and the Norwegian Government

Swaziland
landlocked; almost completely surrounded by South Africa

Sweden
strategic location along Danish Straits linking Baltic and
North Seas

Switzerland
landlocked; crossroads of northern and southern Europe;
along with southeastern France, northern Italy, and southwestern
Austria, has the highest elevations in the Alps

Syria
there are 42 Israeli settlements and civilian land use sites
in the Israeli-occupied Golan Heights (August 2005 est.)

Taiwan
strategic location adjacent to both the Taiwan Strait and the
Luzon Strait

Tajikistan
landlocked; mountainous region dominated by the
Trans-Alay Range in the north and the Pamirs in the southeast;
highest point, Qullai Ismoili Somoni (formerly Communism Peak), was
the tallest mountain in the former USSR

Tanzania
Kilimanjaro is highest point in Africa; b