Fmr. counterterrorism chief blasts Trump's Syria troop decision
Critics say President Trump's decision to withdraw U.S. troops from Syria would jeopardize the coalition's mission and hurt allies, creating a vacuum for ISIS or other terror groups to thrive. Joshua Geltzer is the executive director for Georgetown Law's Institute for Constitutional Advocacy and Protection and former senior director for counterterrorism at the National Security Council. He joins CBSN to explain why President Trump should rethink his decision.