The Muslim Brotherhood has rejected a plan announced by the military-backed interim leadership that sets a fast track for amending the constitution.
Egyptian forces have clashed with protesters in bloodshed that left 51 protesters and three members of the security forces dead, say officials.
Egypt's new leadership has wrangled over the naming of a prime minister, as both the Muslim Brotherhood and their opponents call for new mass rallies.
A new law that excludes former officials of the Gaddafi era from public office is dividing Libya and deepening the turmoil plaguing the country.
Egypt's president has called parliamentary elections for April in an effort to assuage mounting frustration over continued turmoil on the streets.
Egyptians voted for a second day in a presidential runoff pitting Hosni Mubarak's last prime minister against a conservative Islamist.
Egyptians have been hit by an increasingly acute petrol shortage, which the government has blamed on black market sales of fuel.
A year after Libya's uprising against Muammar Gaddafi, its militias continue to hold influence with corruption, violence and anarchy.
Libya's National Transitional Council has proposed a draft law for electing an assembly to draft the country's new constitution.
Rights groups have denounced the startling show of force in the raids on 10 organisations and accused Egypt's generals of trying to silence critics.