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2 key battles against ISIS, 1 major difference

Two key battles against the Islamic State of Iraq and Syria (ISIS) raged Tuesday morning in Iraq: one for the city of Tikrit and the other in nearby Kirkuk Province. As CBS News correspondent Holly Williams reports, U.S.-led airstrikes are only being used in one of those fights, and that could end up being decisive. With […]

CBS news reports:

Two key battles against the Islamic State of Iraq and Syria (ISIS) raged Tuesday morning in Iraq: one for the city of Tikrit and the other in nearby Kirkuk Province. As CBS News correspondent Holly Williams reports, U.S.-led airstrikes are only being used in one of those fights, and that could end up being decisive.

With Iraq's military in disarray, the best fighting force the country's leaders could muster for the battle is a patched-together, rag-tag army of Iraqi government soldiers, local Sunni tribesmen and Iranian-backed Shiite Muslim militias. American-led airstrikes have been critically important in other battles against ISIS -- but there's no U.S. involvement in Tikrit.