Delegates from several African countries gathered in Tripoli to hear Libyan officials slam NATO’s intervention.

Both France and Britain, meanwhile, announced plans to step up attacks on Libya. "We're very much behind the intensification of the military campaign and … so is France," said British Foreign Secretary William Hague.

The buildup comes after U.S. envoy Jeffrey Feltman told a news conference in Benghazi Monday that the U.S. is no longer talking to officials from Gadhafi’s government, and that President Obama has invited the rebels to open a representative office in Washington.