Editorial: As the Turks attack: 3 ways a Trump desertion of Kurdish allies would hurt America

Once again, President Donald Trump is showing his penchant for destroying trust in what has been a valued alliance.

For five years, Syrian Kurdish fighters have been doing much of America's dirty work in Syria. The Kurds have been dismantling the Islamic State militants' hold on what was their caliphate's capital, the city of Raqqa, and vast stretches of territory in the country's north. ISIS, as it's also known, is