The Pentagon’s decision to arm a mostly Syrian Kurdish force has paid big dividends in northern Syria, where the Islamic State has been on the run in recent months. Backed by U.S. air power, Kurdish-led offensives have captured important pieces of the radical group’s “caliphate,” including the town of Manbij this month.
Then Turkish tanks and warplanes entered Syria last week and began targeting the Kurds, their long-standing enemy. But what happened next blindsided Kurdish leaders: Their American allies sided with the Turks — and ordered the Kurdish forces to hand over hard-won territory.
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