Wojciech Jaruzelski had sent Eugeniusz Molczyk to confer with Vice President George H. W. Bush and Bush had agreed with Molczyk that martial law was the lesser of two evils. Whether this meeting with the American vice president occurred is disputed. While it is erroneously cited, Harvard historian Mark Kramer has pointed out that no documents support Jaruzelski's claim. Jaruzelski was chiefly responsible for the imposition of martial law in Poland on 13 December 1981 in an attempt to crush the pro-democracy movements, which included Solidarity, the first non-Communist trade union in Warsaw Pact history. Subsequent years saw his government and its
Soviet reaction to the Polish crisis of 1980–1981 once again, on 13 December 1981, Jaruzelski finally proclaimed martial law. To justify the emergency measures, Jaruzelski was still playing on the public fear of Soviet invasion. However, there was no significant resistance to the martial law and any foreign military backing proved unnecessary. Ever since, Jaruzelski himself has denied that he invited Soviet troops, insisting that, on the contrary, the martial law was aimed at prevention of a Soviet military intervention. In November 1997, a conference was held in Jachranka on the Soviet role in the Polish crisis of 1980–1981, where Solidarity, Polish communist, Soviet and American participants of