/tags/robert-obrien robert o'brien en-US Copyright Wed, 18 Sep 2019 13:49:34 GMT /news-partners/2019-09-18/trump-names-robert-obrien-top-hostage-czar-as-national-security-adviser O'Brien has been working in the State Department as the administration's hostage negotiator. He'll replace former Ambassador John Bolton, who parted company with Trump. Wed, 18 Sep 2019 13:49:34 GMT /news-partners/2019-09-18/trump-names-robert-obrien-top-hostage-czar-as-national-security-adviser Brian Naylor