FILE - In this Feb. 7, 2014 file photo, Russian President Vladimir Putin, right, shakes hands with president of the Presidium of North Korea's Supreme People's Assembly Kim Yong Nam at the Olympic reception hosted by the Russian President in Sochi, Russia.  The North Korea's nominal head of state, not its absolute leader Kim Jong Un, is to visit Russia in May, 2015 to attend celebrations marking the 70th anniversary of the Soviet Union's victory over Nazi Germany.  Pyongyang's state media said Monday, May 4, 2015,  that Kim Yong Nam, president of the Presidium of the Supreme People's Assembly, will travel to Russia to take part in the ceremony. (AP Photo/RIA-Novosti, Alexei Nikolsky, Presidential Press Service, File)
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