U.S. Secretary of State Rex Tillerson speaks during a ceremony at the Warsaw Ghetto Uprising 1943 memorial marking the International Holocaust Remembrance Day, in Warsaw, Poland, Saturday, Jan. 27, 2018. Reacting to to Saturday's suicide bomb attack in Kabul, Afghanistan, Tillerson said the Taliban's use of an ambulance as a weapon to target civilians "represents inhumane disregard for the people of Afghanistan ... and is a violation of the most basic international norms." (AP Photo/Czarek Sokolowski)