Egypt's interim leader has promised fresh elections by early next year.
It's after 51 people, mostly supporters of ousted president Mohamed Morsi, were killed outside Cairo military barracks yesterday - prompting calls for restraint.
Morsi's Muslim Brotherhood have called for an "uprising," saying troops and police "massacred" its supporters during dawn prayers.
Amid fears a civil war could break out - interim president Adly Mansour issued a decree setting a timetable for a referendum on an amended constitution and then for parliamentary elections.
The whole process will take no more than 210 days, according to the decree, meaning elections by early February at the latest.