May 9 (UPI) -- Russian President Vladimir Putin led celebrations marking 80th anniversary of the end of World War II with a parade Friday in Moscow's Red Square of more than 11,000 troops, war-era T-34 tanks, light and heavy armored vehicles and advanced military hardware. Putin was flanked by Chinese President Xi Jinping and 26 other world leaders who flew in specially to witness the proceedings, which featured a People's Liberation Army unit and 12 other contingents from former Soviet