Egypt’s interim leaders have announced a timetable for forming a new elected government amidst high tensions with supporters of ousted President Mohamed Morsi. The timetable calls for ratifying a new constitution within five months, followed by parliamentary elections in 2014 and a presidential vote after that. The interim government also voiced what it called “deep regret” for Monday’s shooting deaths of at least 51 Morsi supporters at the military site where he is believed to be detained. The Egyptian military has claimed it opened fire after coming under threat. The Muslim Brotherhood has rejected the interim government’s timetable and has called for national protests against the killings of its supporters.