(FILES) In this file photo taken on September 02, 2013 Former Soviet leader Mikhail Gorbachev gestures during the opening of a conference to celebrate the 20th anniversary of Green Cross International, founded in 1993 by Gorbachev to address environmental issues as well as poverty and insecurity. - Mikhail Gorbachev, the last Soviet leader, celebrates his 90th birthday on March 2, 2021. (Photo by Fabrice COFFRINI / AFP)