- Peter Bergen: In his selection of H.R. McMaster for national security adviser, Donald Trump made a brilliant choice
- He says McMaster will need to draw on his vast capabilities as Pentagon mulls options on fighting ISIS in Iraq and Syria
Peter Bergen is CNN's national security analyst, a vice president at New America and a professor of practice at Arizona State University. He is the author of "United States of Jihad: Investigating America's Homegrown Terrorists."
(CNN)President Donald Trump's appointment of Lt. Gen. H.R. McMaster to be his national security adviser is a brilliant decision.