- President Obama's top counterterrorism adviser tells Peter Bergen ISIS is on the run
- Lisa Monaco warns of possibility of terrorist attack in early days of Trump presidency
Peter Bergen is CNN's national security analyst, a vice president at New America and a professor at Arizona State University. He is the author of "United States of Jihad: Investigating America's Homegrown Terrorists."
(CNN)President Obama's top counterterrorism adviser said that she believes the United States and its allies are winning the war against ISIS and that the incoming Trump team needs to guard against the possibility of terrorism during the early part of the administration.