Venezuela
claims all of the area west of the Essequibo River in
Guyana, preventing any discussion of a maritime boundary; Guyana has
expressed its intention to join Barbados in asserting claims before
the United Nations Convention on the Law of the Sea (UNCLOS) that
Trinidad and Tobago's maritime boundary with Venezuela extends into
their waters; dispute with Colombia over maritime boundary and
Venezuelan-administered Los Monjes islands near the Gulf of
Venezuela; Colombian-organized illegal narcotics and paramilitary
activities penetrate Venezuela's shared border region; in 2006, an
estimated 139,000 Colombians sought protection in 150 communities
along the border in Venezuela; US, France, and the Netherlands
recognize Venezuela's granting full effect to Aves Island, thereby
claiming a Venezuelan EEZ/continental shelf extending over a large
portion of the eastern Caribbean Sea; Dominica, Saint Kitts and
Nevis, Saint Lucia, and Saint Vincent and the Grenadines protest
Venezuela's full effect claim

Vietnam
southeast Asian states have enhanced border surveillance to
check the spread of avian flu; Cambodia and Laos protest Vietnamese
squatters and armed encroachments along border; an estimated 300,000
Vietnamese refugees reside in China; establishment of a maritime
boundary with Cambodia is hampered by unresolved dispute over the
sovereignty of offshore islands; the decade-long demarcation of the
China-Vietnam land boundary was completed in 2009; China occupies
the Paracel Islands also claimed by Vietnam and Taiwan; involved in
complex dispute with Brunei, China, Malaysia, the Philippines, and
Taiwan over the Spratly Islands; the 2002 "Declaration on the
Conduct of Parties in the South China Sea" has eased tensions but
falls short of a legally binding "code of conduct" desired by
several of the disputants; Vietnam continues to expand construction
of facilities in the Spratly Islands; in March 2005, the national
oil companies of China, the Philippines, and Vietnam signed a joint
accord to conduct marine seismic activities in the Spratly Islands

Virgin Islands
none

Wake Island
claimed by Marshall Islands

Wallis and Futuna
none

West Bank
West Bank and Gaza Strip are Israeli-occupied with current
status subject to the Israeli-Palestinian Interim Agreement -
permanent status to be determined through further negotiation;
Israel continues construction of a "seam line" separation barrier
along parts of the Green Line and within the West Bank; Israel
withdrew from four settlements in the northern West Bank in August
2005; since 1948, about 350 peacekeepers from the UN Truce
Supervision Organization (UNTSO), headquartered in Jerusalem,
monitor ceasefires, supervise armistice agreements, prevent isolated
incidents from escalating, and assist other UN personnel in the
region

Western Sahara
Morocco claims and administers Western Sahara, whose
sovereignty remains unresolved; UN-administered cease-fire has
remained in effect since September 1991, administered by the UN
Mission for the Referendum in Western Sahara (MINURSO), but attempts
to hold a referendum have failed and parties thus far have rejected
all brokered proposals; several states have extended diplomatic
relations to the "Sahrawi Arab Democratic Republic" represented by
the Polisario Front in exile in Algeria, while others recognize
Moroccan sovereignty over Western Sahara; most of the approximately
102,000 Sahrawi refugees are sheltered in camps in Tindouf, Algeria

World
stretching over 250,000 km, the world's 322 international land
boundaries separate 194 independent states and 71 dependencies,
areas of special sovereignty, and other miscellaneous entities;
ethnicity, culture, race, religion, and language have divided states
into separate political entities as much as history, physical
terrain, political fiat, or conquest, resulting in sometimes
arbitrary and imposed boundaries; most maritime states have claimed
limits that include territorial seas and exclusive economic zones;
overlapping limits due to adjacent or opposite coasts create the
potential for 430 bilateral maritime boundaries of which 209 have
agreements that include contiguous and non-contiguous segments;
boundary, borderland/resource, and territorial disputes vary in
intensity from managed or dormant to violent or militarized;
undemarcated, indefinite, porous, and unmanaged boundaries tend to
encourage illegal cross-border activities, uncontrolled migration,
and confrontation; territorial disputes may evolve from historical
and/or cultural claims, or they may be brought on by resource
competition; ethnic and cultural clashes continue to be responsible
for much of the territorial fragmentation and internal displacement
of the estimated 6.6 million people and cross-border displacements
of 8.6 million refugees around the world as of early 2006; just over
one million refugees were repatriated in the same period; other
sources of contention include access to water and mineral
(especially hydrocarbon) resources, fisheries, and arable land;
armed conflict prevails not so much between the uniformed armed
forces of independent states as between stateless armed entities
that detract from the sustenance and welfare of local populations,
leaving the community of nations to cope with resultant refugees,
hunger, disease, impoverishment, and environmental degradation

Yemen
Saudi Arabia has reinforced its concrete-filled security
barrier along sections of the fully demarcated border with Yemen to
stem illegal cross-border activities

Zambia
in 2004, Zimbabwe dropped objections to plans between
Botswana and Zambia to build a bridge over the Zambezi River,
thereby de facto recognizing a short, but not clearly delimited,
Botswana-Zambia boundary in the river