Trump, top general strike different tones on Syria

President Trump said Tuesday that the end is in sight for the U.S. military mission in Syria, yet military leaders have said the U.S. should remain until the Islamic State is wiped out. American reinforcements have arrived in Manbij in recent days, a sign that they will remain a counterweight in the conflict. John Yang talks to former USAID official Mona Yacoubian and Amberin Zaman of Al Monitor.