Norway attempted both a diplomatic solution and a Lars Christensen-financed expedition to establish a weather station to gain economic control over the islands, but both failed in 1929. Instead the Soviet icebreaker "Sedov" set out, led by Otto Schmidt, landed in Tikhaya Bay, and began construction of a permanent base. The Soviet government proposed renaming the archipelago Fridtjof Nansen Land in 1930, but the name never came into use. In 1930 the Norwegian Bratvaag Expedition visited the archipelago, but was asked by Soviet authorities to respect Soviet territorial water in the future. Other expeditions that year were the Norwegian-Swedish balloon expedition led by Hans Wilhelmsson Ahlmann on "Quest" and the German airship "Graf Zeppelin". Except for a German weather station emplaced during the Second World War, these were the last Western expeditions to Franz Josef Land until 1990.