The country already has the makings of a bomb program — uranium deposits, research reactors and a long-delayed power reactor now under construction — though experts said it would take years to produce a weapon.

But its efforts could provoke a new crisis: Turkey would be the first NATO member to break out of the Nuclear Nonproliferation Treaty.

A warning: “There will be ethnic cleansing of the Kurdish people from Syria, and the American administration will be responsible for it,” said the Kurdish commander of the Syrian force that once helped the U.S. fight the Islamic State.

On the ground: The U.S. pullback in Syria has left tens of thousands of women and children in Kurdish-run detainee camps for relatives of Islamic State fighters. On the Turkish side of the border, the fighting has led to at least 20 deaths.

Facebook takes down more disinformation campaigns

The company said Monday that it had removed four state-backed campaigns — three from Iran and one from Russia — in addition to dozens of similar campaigns it has already removed this year.