General Christopher Donahue, commander of U.S. Army Europe and Africa, said allies could seize Kaliningrad "in a timeframe that is unheard of."

Here are the details of the European Union's 18th package of sanctions against Russia over its war in Ukraine, approved on Friday and aimed at dealing further blows to Russia's oil and energy industry.

The E.U. approved plans to lower a price cap on Russian oil and ban transactions with 22 more Russian banks, pressing ahead with sanctions without the U.S.