(FILES) This file photo taken on March 7, 2014 shows Vitaly Churkin, Russia's Ambassador to the United Nations speaking to the media after a closed-door session of the Security Council to discuss the situation in Ukraine at UN headquarters in New York. Russia's envoy to the United Nations Vitaly Churkin died suddenly on February 20, 2017, the foreign ministry said, without naming the cause. / AFP PHOTO / STAN HONDA