Jul 1920Japan occupiesNorth Sakhalin
Dec 1920Far Eastern Rep.cedes Kamchatkato Soviet Russia
1921Norway opensweather stationon Jan Mayen
Mar 1921Okhotsk coastrevolts underBochkaryov
Aug 1921Yakutia revolts
16 Sep 1921–19 Aug 1923Wrangel Islandclaimed for Canada