At least 278 people died in vicious battles between Egyptian security forces and supporters of former President Mohamed Morsi, and 235 of them were civilians, according to state TV. Interim Interior Minister Gen. Mohammed Ibrahim said 43 of the dead are police officers. "It's an open war," said one protester. Reporting from Cairo, CNN reporter Arwa Damon said that "what we're seeing right now is just the beginning of what is promising to be a very, very long and bloody battle as the interim government and the security forces try to regain control of the streets."
Secretary of State John Kerry dealt a stern warning to Egypt's leaders today, saying the latest outbreak of violence had delivered a "serious blow" to attempts at reconciliation between Morsi supporters and the military, the AP reports. He urged the nation's interim leaders to cool their heels and restore order. "This is a pivotal moment for all Egyptians," Kerry said. "The path toward violence leads only to greater instability, economic disaster and suffering." Click for more on the deteriorating situation. (Read more John Kerry stories.)