Behind Putin’s war—and any discussions about peace—is a two-century-old fiction about the two countries’ unity.

Ukrainian troops are reportedly making gains along three parts of the front as Russian forces face a manpower shortage and ...

As the full-scale invasion enters its third year, the Ukrainian government keeps official casualty numbers classified, but ...

The last time Ukraine signed a peace accord with Russia, 10 years ago, it brought only sporadic violence, mounting distrust, ...