In Ukraine, memories of Russia’s annexation are fresh and resentments run high, leaving the country’s president few choices ...

The attack, which killed at least 10 people, was the deadliest on Ukraine’s capital in nearly a year. President Trump called on President Vladimir V. Putin to “STOP!” in a post on social media.

This is not the first time Trump has parroted Kremlin talking points, nor is it the first time he has deployed poor diplomacy ...