SANAA - A pair of U.S. drone strikes in Yemen on Tuesday killed four al-Qaeda militants, security sources said.
It is unclear whether the strikes were related to the heightened security alert in the country after U.S. officials intercepted a message from al-Qaeda leader Ayman al-Zawahiri to operatives in Yemen telling them to "do something."
The strikes come as the State Department ordered Americans in Yemen to leave immediately, citing terrorist activities and civil unrest. All non-emergency U.S. government personnel were also ordered to leave.
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U.S. Air Force Drone - Photo : Paul Ridgeway