August 7, 2011 1:56 PM

Violence in Yemen sends thousands to lives underground

The Yemeni capital remained tense Sunday as a second day of clashes between government forces and armed supporters of powerful tribal leader Sheikh Sadiq al Ahmar threatened to reignite large scale fighting in the city. Twenty miles to the north, residents of Ahrab have been blasted by artillery for months now, sending many fleeing into caves they've dug in soft volcanic rock.

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