The U.N. Security Council is set to hold closed-door talks Monday on the situation in Syria, following the lightning advance by rebels that ousted President Bashar al-Assad. Russia, which provided military assistance to Assad during the nearly 14-year Syrian civil war, requested the Security Council session to discuss the developments, including the potential implications on the U.N.’s peacekeeping mission in the Golan Heights. Israeli troops deployed Sunday to the U.N.-monitored buffer zone in the Golan Heights, with Prime Minister Benjamin Netanyahu saying the move was necessary to protect Israelis after Syrian forces abandoned their positions. Many questions remained Monday about