A Russian Il-78 air force tanker and Su-24 jets fly during a rehearsal for the Victory Day parade in central Moscow

A Russian Il-78 air force tanker and Su-24 jets fly during a rehearsal for the Victory Day parade in central Moscow

A Russian Il-78 air force tanker and Su-24 jets fly during a rehearsal for the Victory Day parade in central Moscow, Russia, May 7, 2015. Russia will celebrate the 70th anniversary of the victory over Nazi Germany in World War Two on May 9. REUTERS/Grigory Dukor