Bhutan
approximately 100,000 Bhutanese refugees living in Nepal, 90%
of whom reside in seven UN Office of the High Commissioner for
Refugees camps, place decades-long strains on Nepal
Bolivia
continues to press Chile and Peru to restore the Atacama
corridor ceded to Chile in 1884; Chile demands water rights to
Bolivia's Rio Lauca and Silala Spring
Bosnia and Herzegovina
Bosnia and Herzegovina and Serbia and
Montenegro have delimited about half of their boundary, but sections
along the Drina River remain in dispute; discussions continue with
Croatia on problem sections of the Una River and villages at the
base of Mount Pljesevica
Botswana
established a commission with Namibia to resolve small
residual disputes along the Caprivi Strip, including the Situngu
marshlands along the Linyanti River; downstream Botswana residents
protest Namibia's planned construction of the Okavango hydroelectric
dam on Popa Falls; dormant dispute remains where Botswana, Namibia,
Zambia, and Zimbabwe boundaries converge
Bouvet Island
none
Brazil
unruly region at convergence of Argentina-Brazil-Paraguay
borders is locus of money laundering, smuggling, arms and drug
trafficking, and harbors Islamist militants; uncontested dispute
with Uruguay over certain islands in the Quarai/Cuareim and
Invernada boundary streams and the resulting tripoint with Argentina
British Indian Ocean Territory Mauritius and Seychelles claim the Chagos Archipelago and its former inhabitants, who reside chiefly in Mauritius, but in 2001 were granted UK citizenship and the right to repatriation since eviction in 1965; repatriation is complicated by the US military lease of Diego Garcia, the largest island in the chain
British Virgin Islands
none
Brunei
Involved in dispute over the Spratly Islands with China,
Malaysia, Philippines, Taiwan, and Vietnam; Brunei established an
exclusive economic fishing zone encompassing Louisa Reef in southern
Spratly Islands in 1984 but makes no public territorial claim to the
offshore reefs; claimants in November 2002 signed the "Declaration
on the Conduct of Parties in the South China Sea", a mechanism to
ease tension but which fell short of a legally binding "code of
conduct"
Bulgaria
joint boundary commission is rectifying boundary with
Romania based on shifts in Danube since last delimitation in 1920