Cayman Islands:
defense is the responsibility of the UK

Christmas Island:
defense is the responsibility of Australia

Clipperton Island:
defense is the responsibility of France

Cocos (Keeling) Islands:
defense is the responsibility of Australia

Cook Islands:
defense is the responsibility of New Zealand, in
consultation with the Cook Islands and at its request

Coral Sea Islands:
defense is the responsibility of Australia;
visited regularly by the Royal Australian Navy; Australia has
control over the activities of visitors

Cuba:
Moscow, for decades the key military supporter and supplier of
Cuba, cut off almost all military aid by 1993

Europa Island:
defense is the responsibility of France

Falkland Islands (Islas Malvinas): defense is the responsibility of the UK

Faroe Islands:
defense is the responsibility of Denmark