Trump and the death of Navalny: Party colleague warns of “Putin wing” of the Republicans. Trump sparked concern among allies earlier this month by saying he would encourage Russia to invade a NATO country that does not spend enough on defense.

The front-runner for the GOP presidential primary has made several public appearances since Russia announced Navalny's death in a distant Arctic prison on Friday. He has not commented on the dissident's shocking death, although he often speaks about what he would do as president if faced with Russia.