WASHINGTON ? Egypt and the United Arab Emirates secretly carried out airstrikes against Islamist militias inside Libya, U.S. officials said Tuesday, decrying the intervention as an escalation of the North African country's already debilitating turmoil. They said the United States had no prior notification of the attacks. One official said the two countries and Saudi Arabia have been supporting for months a renegade general's campaign against Libyan militant groups, but that the Saudis don't appear to have played a role in recent strikes. Another official said Washington knew about Egyptian and U.A.E. plans for a possible operation and warned them against going through with the effort. Libya...