The 2001 CIA World Factbook

by United States. Central Intelligence Agency

Anguilla:
defense is the responsibility of the UK

Antarctica:
the Antarctic Treaty prohibits any measures of a
military nature, such as the establishment of military bases and
fortifications, the carrying out of military maneuvers, or the
testing of any type of weapon; it permits the use of military
personnel or equipment for scientific research or for any other
peaceful purposes

Aruba:
defense is the responsibility of the Kingdom of the
Netherlands

Ashmore and Cartier Islands:
defense is the responsibility of
Australia; periodic visits by the Royal Australian Navy and Royal
Australian Air Force

Baker Island:
defense is the responsibility of the US; visited
annually by the US Coast Guard

Bassas da India:
defense is the responsibility of France

Bermuda:
defense is the responsibility of the UK

Bouvet Island:
defense is the responsibility of Norway

British Indian Ocean Territory:
defense is the responsibility of the
UK; the US lease on Diego Garcia expires in 2016

British Virgin Islands:
defense is the responsibility of the UK