Are the four northern islands inhabited by Japanese or Russians?

The four northern islands are under the jurisdiction of South Kurilsk County, Sakhalin State. Japan also claims sovereignty over the region, calling it the Northern Territory (Hiragana: ほっぽぅりょぅど) and the Northern Territory (Hiragana :ほっぽぅ〭)

Extended data

The main islands of the four northern islands:

1, Guohou Island

Guohou Island (Japan called Guohou Island/くなしりとぅ, Russia called Guohou Island/Ostroff Guohou Island), one of the disputed islands between Japan and Russia, belongs to the Thousand Islands geographically.

2、Itulup

Toulouppe Island (Russian: островитуруп, Japanese: choose Island/ぇとろ).

Baidu Encyclopedia-Guohou Island

Baidu encyclopedia-choose to catch the island

Baidu Encyclopedia-South Kuril Islands