New Russian military vehicles making their way to Red Square are photographed through a cafe window during a rehearsal for the Victory Day military parade which will take place at Moscow's Red Square on May 9 to celebrate 70 years after the victory in WWII, in Moscow, Russia, Wednesday, April 29, 2015. (Photo by Alexander Zemlianichenko/AP Photo)

Russian servicemen drive a partially covered self-propelled howitzer Koalitsiya-SV along a street before a rehearsal for the Victory Day parade in Moscow, Russia, April 29, 2015. Russia will celebrate the 70th anniversary of the victory over Nazi Germany in World War Two on May 9. (Photo by Maxim Zmeyev/Reuters)

Russian servicemen stand in a line as they take part in a rehearsal for the Victory Day festive march in the Siberian city of Krasnoyarsk, Russia, April 29, 2015. (Photo by Ilya Naymushin/Reuters)

Russian servicemen drive a BMD04 amphibious infantry fighting vehicle along a street before a rehearsal for the Victory Day parade in Moscow, Russia, April 29, 2015. (Photo by Maxim Zmeyev/Reuters)

Interior Ministry members speak near Tigr (Tiger) Russian all-terrain infantry mobility vehicles before a rehearsal for the Victory Day parade in central Moscow, Russia, April 29, 2015. (Photo by Maxim Zmeyev/Reuters)

Russian servicemen drive a partially covered T-14 Armata tank along a street before a rehearsal for the Victory Day parade in Moscow, Russia, April 29, 2015. (Photo by Maxim Zmeyev/Reuters)

A member of a military orchestra warms a hand while playing a wind instrument during a rehearsal for the Victory Day festive march in the Siberian city of Krasnoyarsk, Russia, April 29, 2015. (Photo by Ilya Naymushin/Reuters)

Buk surface-to-air missile systems (front) drive along a street before a rehearsal for the Victory Day parade in Moscow, Russia, April 29, 2015. (Photo by Maxim Zmeyev/Reuters)

A woman sits in a cafe as new Russian military vehicles make their way to Red Square during a rehearsal for the Victory Day military parade which will take place at Moscow's Red Square on May 9 to celebrate 70 years after the victory in WWII, in Moscow, Russia, Wednesday, April 29, 2015. (Photo by Alexander Zemlianichenko/AP Photo)

A partially covered Russian Bumerang (Boomerang) wheeled armored personnel carrier drives along a street before a rehearsal for the Victory Day parade in Moscow, Russia, April 29, 2015. (Photo by Maxim Zmeyev/Reuters)

A Russian military vehicle column drives along a street before a rehearsal for the Victory Day parade in Moscow, Russia, April 29, 2015. (Photo by Maxim Zmeyev/Reuters)

Russian servicemen drive a Rakushka armored personnel carrier along a street before a rehearsal for the Victory Day parade in Moscow, Russia, April 29, 2015. (Photo by Maxim Zmeyev/Reuters)

Russian servicemen are seen onboard a T-90 tank in a street before a rehearsal for the Victory Day parade in Moscow, Russia, April 29, 2015. (Photo by Maxim Zmeyev/Reuters)

A partially covered T-15 heavy infantry fighting vehicle (IFV) drives along a street before a rehearsal for the Victory Day parade in Moscow, Russia, April 29, 2015. (Photo by Maxim Zmeyev/Reuters)

A servicewoman speaks on a mobile phone as she takes part in a rehearsal for the Victory Day festive ceremony in the Siberian city of Krasnoyarsk, Russia, April 29, 2015. (Photo by Ilya Naymushin/Reuters)

Russian military vehicles are seen in Tverskaya street before a rehearsal for the Victory Day parade, with the Kremlin towers (R) seen in the background, in central Moscow, Russia, April 29, 2015. (Photo by Maxim Shemetov/Reuters)

Interior Ministry members stand guard near Russian military vehicles before a rehearsal for the Victory Day parade in central Moscow, Russia, April 29, 2015. (Photo by Maxim Shemetov/Reuters)

The Russian T-14 Armata tank, with its turret covered with fabric, makes its way to Red Square during a rehearsal for the Victory Day military parade which will take place at Moscow's Red Square on May 9 to celebrate 70 years after the victory in WWII, in Moscow, Russia, Wednesday, April 29, 2015. (Photo by Alexander Zemlianichenko/AP Photo)