Italy:
Croatia and Italy made progress toward resolving a bilateral
issue dating from World War II over property and ethnic minority
rights

Jamaica:
none

Jan Mayen:
none

Japan:
islands of Etorofu, Kunashiri, and Shikotan, and the Habomai
group occupied by the Soviet Union in 1945, now administered by
Russia, claimed by Japan; Liancourt Rocks (Takeshima/Tokdo) disputed
with South Korea; Senkaku-shoto (Senkaku Islands) claimed by China
and Taiwan

Jarvis Island:
none

Jersey:
none

Johnston Atoll:
none

Jordan:
none

Juan de Nova Island:
claimed by Madagascar

Kazakhstan:
Caspian Sea boundaries are not yet determined among
Azerbaijan, Iran, Kazakhstan, Russia, and Turkmenistan