Former Russian President Medvedev calls for preemptive strikes while Trump gives Putin a 50-day ultimatum to reach peace with Ukraine or face sanctions.

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

Australia's government said on Saturday it had delivered M1A1 Abrams tanks to Ukraine as part of a A$245 million ($160 million) package to help the country defend itself against Russia in their ongoing war.

One dead in Odesa as massive drone attacks target multiple cities across Ukraine - Ukraine’s allies welcome new EU sanctions package targeting Russian oil and gas industry

NATO's enhanced ground capabilities in the Baltic region spark Russian warnings as military focus intensifies on Kaliningrad and the strategic Suwalki Corridor

U.S. President Donald Trump's decision to ramp up arms shipments to Ukraine is a signal to Kyiv to abandon peace efforts, Russia said on Thursday, vowing it would not accept the "blackmail" of Washington's new sanctions ultimatum.

In a keynote speech in London last month, the NATO Secretary General Mark Rutte repeated a warning he has made in public at least three times this year: the western alliance is severely lagging behind Moscow on ammunition production.

Russia launched four missiles and 136 drones into Ukraine overnight into Monday morning, according to Ukraine's air force.