US to impose sanctions against Turkey for buying Russian S-400 missiles

The U.S. plans to impose sanctions on Turkey over its purchase of S-400 missiles after years of drama that began with the NATO ally’s decision to buy the air-defense system from Russia in 2017.

President Donald Trump has signed off on a package of measures recommended by Secretary of State Michael Pompeo, according to two people familiar with the matter. The people didn’t say what the sanctions would include.

The sanctions would be imposed under the Countering America’s Adversaries Through Sanctions Act, known as CAATSA. Trump, who has long highlighted his personal rapport with Turkish President Recep Tayyip Erdogan, had resisted bipartisan