The potential for violence and even more deaths is high in Egypt as both sides have called for demonstrations after Friday prayers.
The death toll from Wednesday's clashes has officially surpassed 600, and it continues to rise. Some funerals are already being held, but so many people were killed this week that families are struggling to even claim the bodies of their loved ones.
There is a concern among many in the international community that the violence in Egypt will continue to spread. The U.N. Security Council met in New York Thursday night and was briefed on the situation behind closed doors.
President Obama condemned the government's decision to crackdown on protestors and he announced the U.S. would cancel bi-annual military exercises with Egypt that date back to 1981.
"Our traditional cooperation cannot continue as usual when civilians are being killed in the streets and rights are being rolled back," Obama said.
One thing the U.S. will not do right now is cut off the $1.3 billion in aid to Egypt. Most of the funds go to the military, which backs the interim government, which most Egyptians support.
The Muslim Brotherhood refuses to recognize the interim government. They say they will not negotiate until Mohamed Morsi is back in office, and they'll take to the streets Friday demanding his return. Egypt's government has authorized the use of deadly force against protestors who target police or government buildings.
Egypt's interim government issued a statement expressing sadness over the deaths of Egyptians, but it also defended it's crackdown saying militant groups are trying to target the government and its vital institutions.