Nigeria
republic transitioning from military to civilian rule
Niue
self-governing parliamentary democracy
Norfolk Island
NA
Northern Mariana Islands commonwealth; self-governing with locally elected governor, lieutenant governor, and legislature
Norway
constitutional monarchy
Oman
monarchy
Pakistan
federal republic
Palau
constitutional government in free association with the US; the
Compact of Free Association entered into force 1 October 1994
Panama
constitutional democracy
Papua New Guinea
constitutional monarchy with parliamentary democracy