Presidency of Ronald Reagan to forestall the possibility of an agreement between the United States and the Soviet Union. Nonetheless, both Gorbachev and Reagan agreed to continue arms control negotiations at the October 1986 Reykjavík Summit. At the summit, Gorbachev and Reagan closed in on an agreement to greatly reduce or eliminate the nuclear stockpiles of both the U.S. and the Soviet Union over a ten-year period, but the deal collapsed due to disagreements regarding SDI development. Reagan attacked Gorbachev in a 1987 speech delivered in West Berlin, but negotiations continued. Gorbachev and Reagan broke the impasse by agreeing to negotiate separate treaties on
1989 Sino-Soviet Summit massive student protests in the Chinese capital. Nonetheless, neither side proposed to postpone or reschedule the meeting. Gorbachev refused to pass judgement on the student protests in hopes that the Chinese leaders and the student protesters would resolve their differences by themselves. Even though the demonstrations disrupted the reception of the Soviet delegation and many of the social events of the visit were cancelled, Gorbachev was still very pleased with the reception in Beijing as well as the summit as a whole as he was able to accomplish his goal of normalizing relations. According to political scientist, William Taubman, even