Midway Islands:
defense is the responsibility of the US

Monaco:
defense is the responsibility of France

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

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

New Caledonia:
defense is the responsibility of France

Niue:
defense is the responsibility of New Zealand

Norfolk Island:
defense is the responsibility of Australia

Northern Mariana Islands:
defense is the responsibility of the US