winning only 53% of the popular vote. The Second Malayan Emergency concludes with a peace agreement. The Malayan Communist Party disbands and Chin Peng remains in exile in Thailand until his death in 2013. December 3 The entire leadership of the ruling Socialist Unity Party in East Germany, including Egon Krenz, resigns. Hans Modrow becomes de facto the country's last leader. Cold War: Malta Summit – Concluding a 2-day meeting off the coast of Malta, U.S. President George H. W. Bush and Soviet leader Mikhail Gorbachev release statements indicating that the Cold War between their nations may be coming to an end. Gorbachev implies criticism of the 1968 Warsaw Pact invasion of Czechoslovakia. December 4 – Prime Minister of Jordan Zaid ibn Shaker resigns and is replaced by Mudar Badran. December 6 The DAS Building bombing occurs in Bogotá, killing 52 people and injuring about 1,000. Egon Krenz resigns as Chairman of the State Council of the German Democratic Republic, and is replaced by Manfred Gerlach, the first non-Communist to hold that post. École Polytechnique massacre (or Montreal Massacre): Marc Lépine, an anti-feminist gunman, murders fourteen young women at the École Polytechnique de Montréal. December 7 Ladislav Adamec resigns as Prime Minister of Czechoslovakia. He is succeeded by Marián Čalfa on December 10. Singing Revolution: The Lithuanian Soviet Socialist Republic becomes the first of the republics of the Soviet Union to abolish the Communist Party's monopoly on power. December 9 – The Socialist Unity Party of Germany elects the reformist Gregor Gysi as party leader. December 10 President of Czechoslovakia Gustáv Husák swears in a new cabinet with a non-Communist and then immediately resigns as president. Tsakhiagiin Elbegdorj announces the establishment of Mongolia's democratic movement, that peacefully changes the second-oldest Communist country into a democracy. December 11 – The International Trans-Antarctica Expedition, a group of six explorers from six nations, reaches the South Pole. December 12 – Hong Kong begins the forcible repatriation of Vietnamese boat people, starting with a group of 59 who were flown to Hanoi. December 14 – Chile holds its first free election in sixteen years, electing Patricio Aylwin as president. This marks the first time that all Ibero-American nations, except Cuba, have elected constitutional governments simultaneously. December 15 – Drug baron José Gonzalo Rodríguez Gacha is killed by Colombian police. December 16 – The Romanian Revolution begins in Timișoara, initiated by the Hungarian minority. December