New Trump Adviser Once Backed Regime Change in Iran, North Korea Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Former U.S. Ambassador to the UN John Bolton speaks at the Conservative Political Action Conference (CPAC), Friday, Feb. 24, 2017, in Oxon Hill, Md. ( Alex Brandon / AP Photo ) Produced by Amber Hall and Ellen Frankman Hosted by Todd Zwillich Produced by PRI and WNYC