RAF Greenham Common November 1983; they were flown onto the base by Lockheed C-5 Galaxys. A series of meetings held during August and September 1986 culminated in a summit between United States President Ronald Reagan and the General Secretary of the CPSU Mikhail Gorbachev in Reykjavík, Iceland, on 11 October 1986. To the surprise of both men's advisers, the two agreed in principle to removing INF systems from Europe and to equal global limits of 100 INF missile warheads. The United States and the Soviet Union signed the Intermediate-Range Nuclear Forces Treaty in 1987, which led to the removal of all nuclear missiles
Nancy Reagan failed to include some $3 million worth of fashion items between 1983 and 1988 on their tax returns; they were billed for a large amount of back taxes and interest, which was subsequently paid. After President Reagan revealed that he had been diagnosed with Alzheimer's disease in 1994, she made herself his primary caregiver, and became actively involved with the National Alzheimer's Association and its affiliate, the Ronald and Nancy Reagan Research Institute in Chicago, Illinois. In April 1997, Nancy Reagan joined President Bill Clinton and former Presidents Ford and Bush in signing the Summit Declaration of Commitment in advocating