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
Presidency of Ronald Reagan treaty also established an inspections regime designed to ensure that both parties honored the agreement. In addition to the INF Treaty, Reagan and Gorbachev discussed a potential strategic arms treaty, known as START, but SDI continued to be a major point of contention. In May 1988, the Senate voted 93-to-5 in favor of ratifying the INF Treaty. Though it was attacked by conservatives like Jesse Helms, the INF Treaty provided a major boost to Reagan's popularity in the aftermath of the Iran–Contra Affair. A new era of trade and openness between the two powers commenced, and the U.S. and the