Death toll from Egypt violence rises to 638

At least 638 people were confirmed killed and nearly 4,000 wounded in the violence

Morsi's Muslim Brotherhood put the casualty toll at a staggering 2,600 killed and around 10,000 injured, but the figures appeared high in light of footage by regional and local TV networks, as well as The Associated Press.

Obama canceled joint U.S.-Egypt military exercises scheduled for next month

Death toll from Egypt violence rises to 638: