Norway trades a wee bit of land with Russia, too - a couple of banks in the Pasvik and Grense Jakobselv rivers are traded back and forth as the currents shift t

Norway trades a wee bit of land with Russia, too - a couple of banks in the Pasvik and Grense Jakobselv rivers are traded back and forth as the currents shift them from one side to the other of the centerline, the bilateral agreement governing this calls for the border to be reviewed every 25 years. One amusing tidbit I remember is that even as the border is to follow the centerline of the rivers, no country is to gain or lose territory when the border is reviewed - so there's still some room for arbitration; the net size of both countries is to be unchanged. One of the officials involved in the Norwegian delegation claimed that Norway was the only country ever to have been ceded part of Russian territory in modern times, though I expect this to be one for the newspapers - presumably other states with a river border with Russia have similar agreements.