O’Brien, who serves as special presidential envoy for hostage affairs, is set to replace John Bolton.
I am pleased to announce that I will name Robert C. O’Brien, currently serving as the very successful Special Presidential Envoy for Hostage Affairs at the State Department, as our new National Security Advisor. I have worked long & hard with Robert. He will do a great job!
— Donald J. Trump (@realDonaldTrump) September 18, 2019