Bermuda:
none

Bhutan:
refugee issue over the presence in Nepal of approximately
98,700 Bhutanese refugees, 90% of whom are in seven United Nations
Office of the High Commissioner for Refugees (UNHCR) camps

Bolivia:
has wanted a sovereign corridor to the South Pacific Ocean
since the Atacama area was lost to Chile in 1884; dispute with Chile
over Rio Lauca water rights

Bosnia and Herzegovina:
none

Botswana:
none

Bouvet Island:
none

Brazil:
none

British Indian Ocean Territory:
the Chagos Archipelago is claimed by
Mauritius and Seychelles

British Virgin Islands:
none

Brunei:
possibly involved in a complex dispute over the Spratly
Islands with China, Malaysia, Philippines, Taiwan, and Vietnam; in
1984, Brunei established an exclusive fishing zone that encompasses
Louisa Reef in the southern Spratly Islands, but has not publicly
claimed the island