WASHINGTON — U.S. airstrikes helped Iraqi troops drive Islamic State militants from Tikrit this week, yet the government may balk at cutting loose Iranian-backed Shiite militias as the price for continued American help in future battles.
The militias played a leading role in the Tikrit offensive when it began several weeks ago. After initial successes, Iraqi troops and the militias could not dislodge the militants from the city despite an overwhelming edge in forces.
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