Yulia Svyrydenko was made Ukraine's new prime minister and Olga Stefanishyna got the plum role of U.S. ambassador (after Republican resistance in Washington helped push out her predecessor), while many of their colleagues were reassigned to new posts as the national parliament voted through the changes Thursday afternoon.

Trump announced Monday that the U.S. will be sending weapons to Ukraine through NATO, marking a turnaround from previous policy that was generally skeptical of supplying Kiev with weapons while the U...

But using heavy tariffs to stop countries buying Russian oil would be a blunt tool – and while they could significantly squeeze Russia’s war funding, they could also unleash more havoc on the rest of...