The Wall Street Journal | Raja Abdulrahim: President Trump’s decision to step out of the way of a Turkish offensive in northern Syria renews pressure on the Kurdish ethnic group and the forces that helped it establish a semiautonomous region in the country.

The Kurdish ethnic minority group, with a distinct language and culture, is spread across the Middle East, in Syria, Turkey, Iraq and Iran. A majority of the estimated 30 million Kurdish people are Sunni Muslim and integrated into the countries where they reside.

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