U.N. Security Council members confronted Russia on Tuesday over a missile strike the previous day that destroyed part of Ukraine’s largest children’s hospital, pouring out condemnations at an emergency meeting chaired by Moscow’s own ambassador.

Russia denies responsibility for the strike at the hospital, where at least two staffers were killed.

France and Ecuador asked for the session at the Security Council, but Russia led it as the current holder of the council’s rotating presidency, putting Ambassador Vassily Nebenzia on the receiving end of the criticism.

“Mr. President, please stop this war. It has been going on for too long,” Slovenian Ambassador Samuel Zbogar appealed.

U.S. Ambassador Linda Thomas-Greenfield told colleagues that they were there “because Russia, a permanent member of the Security Council, current rotational president of the Security Council, attacked a children’s hospital.”