Mikhail Gorbachev and Ronald Reagan's friendship through the years - in pictures
Soviet leader Mikhail Gorbachev, left, shakes hands with Ronald Reagan, the US president at the time, at the Geneva conference in November 1985. AP
Reagan and Gorbachev meet for the first time before summit talks at the villa Fleur D'Eau at Versoix near Geneva, Switzerland, on November 19, 1985. AP
Reagan and Gorbachev during their first summit in Geneva. Reuters
Reagan and Gorbachev at the first summit in Geneva. EPA
Gorbachev arrives at Keflavik Airport on October 9, 1986, in Reykjavik, Iceland, for several sessions of talks with Reagan. AP
Gorbachev and Reagan talk during their meeting in Reykjavik. AP
Reagan and Gorbachev during the summit in Reykjavik. Getty Images
As a supporter of the de-Stalinisation programmes of his predecessor Nikita Khrushchev, Gorbachev initiated numerous reforms during his tenure. EPA
Reagan and Gorbachev sign the Intermediate-Range Nuclear Forces (INF) treaty at the White House in Washington on December 8, 1987. Reuters
Gorbachev and Reagan sign the treaty, which eliminated US and Soviet intermediate-range and shorter-range nuclear missiles. AFP
Reagan and Gorbachev exchange pens during the treaty-signing ceremony at the White House. AP
Gorbachev and Reagan share smiles after toasting each other during a dinner hosted at the Soviet embassy in Washington. AFP
Reagan talks with Gorbachev during arrival ceremonies at the White House during a three-day summit in Washington in 1987. AP
Gorbachev and Reagan speak to the press in Washington on December 8, 1987. AP
Reagan and Gorbachev talk during a walk in Red Square in Moscow, the former Soviet Union, on May 31, 1988. AP
Reagan and Gorbachev don cowboy hats while enjoying a moment at Reagan's Rancho del Cielo, near Santa Barbara, California, in May 1992. AP
Reagan takes Gorbachev for a drive to tour the ranch. Reuters
Gorbachev and his wife, Raisa, with Reagan and his wife, Nancy, at the ranch in the Santa Ynez Mountains. Reuters
Gorbachev pauses in front of Reagan's casket during his funeral in the Capitol Rotunda in Washington, June 10, 2004. EPA