The Islamic State group’s self-styled “caliphate” across parts of Iraq and Syria seemed largely defeated last year, with the loss of its territory, the killing of its founder in a U.S. raid and an unprecedented crackdown on its social media propaganda machine.
Gen. Qassem Soleimani, the head of Iran's elite Quds force and mastermind of its regional security strategy, was killed in an airstrike early Friday near the Iraqi capital's international airport. The attack has caused regional tensions to soar.