Aleksei A. Navalny, the imprisoned opposition leader, did not appear at a court hearing two weeks ago and has not been heard from since. His allies are trying desperately to find him.
Prime Minister Donald Tusk is sworn in and vows to try to invigorate flagging European support for Ukraine and push for “full mobilization” against Russia’s military assault.
The opposition leader was endorsed by Parliament as the country’s next prime minister, unseating the right-wing Law and Justice party that had long denounced him as unfit to rule.