The fact that, for all practical purposes, the Cold War ended during Ronald Reagan's presidency has led some to conclude that he was primarily responsible for the U.S. "victory" over the Soviet Union. The so-called Reagan victory school holds that his administration's military and ideological assertiveness during the 1980s was primarily responsible for the end of the Cold War, the demise of Communism in Europe, and ultimately the collapse of the Soviet Union itself. As the president put it on December 16, 1988, the changes taking place in the Soviet Union were in part the result of U.S. firmness, a strong defense, healthy alliances, and a willingness to use force when necessary. Moreover, as he boasted, he had been more than willing to point out the differences in the American and Soviet political systems at every opportunity. In addition, his supporters have asserted that the "full-court press" launched by the administration during Reagan's first term, which included a military buildup capped by SDI, the denial of technology to the Soviet Union, and the administration's counteroffensive in the Third World, delivered the "knock-out punch" to a system that was internally bankrupt "and on the ropes.