(NEWSER– American concern about the threat of an al-Qaeda attack is only intensifying. The State Department today ordered all non-essential government employees to leave Yemen, and it urged all American citizens there to do the same, reports Reuters. The development comes after news reports revealed that one of the key pieces of intelligence prompting all this concern were intercepted messages between al-Qaeda chief Ayman al-Zawahri and the leader of Yemen affiliate al-Qaeda in the Arabian Peninsula, Nasser al-Wuhayshi. Other developments:

  • Drone strike: A suspected American drone strike killed four members of al-Qaeda traveling in a car in central Yemen overnight, reports the BBC.
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