Christians Given Ultimatum by Islamic State Fighters

Shi'ite militants fire machine guns in the Iraqi city of Tikrit Sunday. They're launching an assault to take back the city currently held by Islamic State fighters. So far, Baghdad has struggled to recapture cities seized by Sunni insurgents last month—including the city of Mosul. Hundreds of Christians who were forced to flee there attend church services Sunday in Arbil, the capital of the autonomous Kurdish region. They had been given an ultimatum Thursday by the Islamic State:

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