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Sen. Lindsey Graham, R-S.C., says the U.S. must prevent Islamic extremists from toppling the Iraqi government, warning of the consequences if we fail to act

Sen. Lindsey Graham, R-S.C., says the U.S. must prevent Islamic extremists from toppling the Iraqi government, warning of the consequences if we fail to act.
Jun 15, 2014 (05:07)
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