Russian President Boris Yeltsin (R) speaks with Soviet President Mikhail Gorbachev during Gorbachev's address to the Extraordinary meeting of the Supreme Soviet of Russian Federation in Moscow in this August 23, 1991 file photo. Russia is marking the 20th anniversary of the failed 1991 coup by hardline communists that hastened the end of the Soviet Union. REUTERS/Alexander Natruskin/Files (RUSSIA - Tags: POLITICS ANNIVERSARY)