Macau
defense is the responsiblity of China

Marshall Islands
defense is the responsibility of the US

Mayotte
defense is the responsibility of France; small contingent of
French forces stationed on the island

Micronesia, Federated States of
defense is the responsibility of the
US

Midway Islands
defense is the responsibility of the US

Monaco
defense is the responsibility of France; the Palace Guard
performs ceremonial duties (2003)

Montenegro
Montenegrin plans call for the establishment of a fully
professional armed forces

Montserrat
defense is the responsibility of the UK

Nauru
Nauru maintains no defense forces; under an informal
agreement, defense is the responsibility of Australia

Navassa Island
defense is the responsibility of the US