The European Union is targeting Russia with more sanctions over its war on Ukraine. The aim is to deprive Moscow of energy revenue through a lower oil price cap and a ban on transactions with Nord Stream gas pipelines.

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

Europe will not back down in its support for Ukraine. The EU will keep raising the pressure until Russia ends its war,” EU foreign policy chief Kaja Kallas said in a statement.

Former Russian President Dmitry Medvedev on Friday predicted the Russian economy would withstand the European Union's latest sanctions package and said Moscow would intensify its strikes against Ukraine.

Putin’s refusal to compromise on Ukraine, say analysts, is a colossal error costing Russia regional influence, lucrative energy markets and its place in the world.