(Gengshen October 24), December 1, 1980, the Soviet Union announced the blockade of the border of East Germany and Poland.

1980 12 1, 2009, the Soviet blockade of the German Democratic Republic - Poland border.
reported that: "Soviet officials notified the previous weekend three Western allies - the United States, France and Britain, two with the East German - Polish border, 50 km wide strip zone has been provisionally declared off-limits military zone. Reported that three regions between the two open areas in the long term does not Westerners. "This announcement is actually the entire border blocked. (Lssdjt.com)
people in the West that the Soviet Union in December to take such action without precedent.
reported that Soviet officials to several allies in the the Potsdam military delegation declared the ban, did not explain the reason. Allies, diplomats in Bonn, seems to move with the political and economic crisis in Poland. Western news agency also reported that the Soviet Union while blocking a wave - Soviet border some areas.