Russia’s Deputy Permanent Representative Petr Iliichev, center, delivers his remarks after a moment of silence in the U..N. Security Council, Tuesday, Feb. 21, 2017. Vitaly Churkin, Russia’s ambassador to the United Nations since 2006, died suddenly after falling ill at his office at Russia’s U.N. mission Monday.He was the longest-serving ambassador on the Security Council, the U.N.’s most powerful body. (AP Photo/Richard Drew)