James Marson leads Ukraine coverage for The Wall Street Journal.

Polish security agency to investigate disappearance of Belarus’s opposition activist amid fears of foreign involvement.

The president’s comments came after he said Crimea “will stay with Russia,” a position backed by the mayor of Kyiv, who ...

UN independent rights experts on Thursday condemned what they said was “coercive psychiatric treatment” inflicted on dozens ...

Yaroslav Trofimov is the chief foreign-affairs correspondent of The Wall Street Journal, covering major issues and developments around the world.