In Syria, a suicide bomber struck a restaurant in the northern city of Manbij Wednesday, killing 19 people including four Americans—two of them U.S. troops. The bombing was claimed by ISIS and came just weeks after President Trump declared victory over the group and ordered U.S. troops to withdraw from Syria, prompting the resignation of Pentagon chief Jim Mattis. Just hours after the attack, Vice President Mike Pence said in a speech, ”ISIS has been defeated,” and “the caliphate has crumbled.” Wednesday’s attack drew renewed calls from congressional hawks—both Republicans and Democrats—to reverse Trump’s Syria withdrawal. The U.S. has an estimated 2,000 troops stationed in Syria, even though Congress has never declared war on the country.