River on border with Costa Rica

Niger:
Libya claims about 19,400 sq km in northern Niger;
delimitation of international boundaries in the vicinity of Lake
Chad, the lack of which led to border incidents in the past, has
been completed and awaits ratification by Cameroon, Chad, Niger, and
Nigeria

Nigeria:
delimitation of international boundaries in the vicinity of
Lake Chad, the lack of which led to border incidents in the past,
has been completed and awaits ratification by Cameroon, Chad, Niger,
and Nigeria; dispute with Cameroon over land and maritime boundaries
around the Bakasi Peninsula is currently before the ICJ; tripartite
maritime boundary and economic zone dispute with Equatorial Guinea
and Cameroon is currently before the ICJ

Niue:
none

Norfolk Island:
none

Northern Mariana Islands:
none

Norway:
territorial claim in Antarctica (Queen Maud Land); Svalbard
is the focus of a maritime boundary dispute between Norway and Russia

Oman:
boundary with the UAE has not been bilaterally defined;
northern section in the Musandam Peninsula is an administrative
boundary

Pacific Ocean:
some maritime disputes (see littoral states)

Pakistan:
status of Kashmir with India; water-sharing problems with
India over the Indus River (Wular Barrage)

Palau:
none

Palmyra Atoll:
none

Panama:
none

Papua New Guinea:
none

Paracel Islands:
occupied by China, but claimed by Taiwan and Vietnam

Peru:
none

Philippines:
involved in a complex dispute over the Spratly Islands
with China, Malaysia, Taiwan, Vietnam, and possibly Brunei; claim to
Malaysia's Sabah State has not been fully revoked

Pitcairn Islands:
none

Poland:
none

Puerto Rico:
none

Qatar:
in March of 2001, the International Court of Justice (ICJ)
awarded the Hawar Islands to Bahrain and adjusted its maritime
boundary with Qatar; a final border resolution was agreed to with
Saudi Arabia in March of 2001

Reunion:
none

Romania:
none

Russia:
dispute over at least two small sections of the boundary
with China remains to be settled, despite 1997 boundary agreement;
islands of Etorofu, Kunashiri, and Shikotan and the Habomai group
occupied by the Soviet Union in 1945, now administered by Russia,
claimed by Japan; Caspian Sea boundaries are not yet determined
among Azerbaijan, Iran, Kazakhstan, Russia, and Turkmenistan;