Reagan appreciated the revolutionary change in the direction of the Soviet policy with Mikhail Gorbachev, and shifted to diplomacy, intending to encourage the Soviet leader to pursue substantial arms agreements. He and Gorbachev held four summit conferences between 1985 and 1988: the first in Geneva, Switzerland, the second in Reykjavík, Iceland, the third in Washington, D.C., and the fourth in Moscow. Reagan believed that if he could persuade the Soviets to allow for more democracy and free speech, this would lead to reform and the end of Communism. The critical summit was at Reykjavík in October 1986, where they met alone, with translators but with no aides. To the astonishment of the world, and the chagrin of Reagan's most conservative supporters, they agreed to abolish all nuclear weapons. Gorbachev then asked the end of SDI. Reagan said no, claiming that it was defensive only, and that he would share the secrets with the Soviets. No deal was achieved.