U.S. President-elect Donald Trump has chosen Richard Grenell, his former intelligence chief, as presidential envoy for special missions, a post where he will likely drive policies toward some U.S. adversaries, including North Korea. "Ric will work in some of the hottest spots around the World, including Venezuela and North Korea," Trump said on his Truth Social media platform without further describing the duties. A Trump transition source told Reuters that Grenell will also focus on tensions in the Balkans. Grenell served as Trump's ambassador to Germany, a special presidential envoy for Serbia and Kosovo peace negotiations, and as acting director of national intelligence during Trump's 2017-2021 term. Presidents name presidential and special envoys to focus on global issues, crises or specific diplomatic efforts.