U.S. airstrikes fly anew after decapitation
No letup, Obama asserts; earlier bid at rescue failed
Posted: August 21, 2014 at 5:05 a.m.
The United States stood firm Wednesday in its fight against Islamic State militants, launching a new series of airstrikes against the extremist group that has seized a swath of territory across Iraq and Syria and beheaded a U.S. journalist, despite its threats to kill another American hostage.
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