Soviet President Mikhail Gorbachev will visit West Germany in June and plans wide-ranging economic and political talks with the Bonn leadership, a government spokesman said. Gorbachev also will visit Britain and Cuba in April, the British government and Soviet media said Monday. Gorbachev had planned visits to those two nations in December but canceled them because of the earthquake in Armenia. In Bonn, chief government spokesman Friedhelm Ost said that Gorbachev would visit from June 12-15, meeting several times with Chancellor Helmut Kohl.