The former president sees loyalty as a key criterion as he considers a mix of familiar faces and new allies for top positions. -snip- the State Department leadership is likely to be determined from among three contenders: former National Security Advisor Robert O'Brien, Senator Bill Hagerty of Tennessee, and Senator Marco Rubio of Florida. -snip- Former US Ambassador Richard Grenell, who served as Trump's envoy to Germany, has emerged as a leading candidate for national security advisor. The defense secretary position has drawn three prominent candidates: former Secretary of State Mike Pompeo, Representative Mike Waltz of Florida, and Senator Tom...