United Nations investigators have accused the U.S.-led coalition and Russia of potentially violating international law and committing war crimes in Syria during 2017. The new U.N. report comes as the Syrian government, backed by Russia, continues its offensive against Eastern Ghouta, outside the capital Damascus. Activists say 80 people were killed in Eastern Ghouta by airstrikes and shelling on Monday alone. Meanwhile, a Russian cargo plane crashed near a Syrian air base on Tuesday, killing all 39 Russian servicemen on board. The Russian military says the crash was caused by a technical error and that the plane was not shot down.