NATO defense chiefs were due to hold a virtual meeting Wednesday, a senior alliance official said, as Western countries pushing for an end to Russia’s war on Ukraine devise possible future security g...

Russia is pushing back at the idea of U.S. and European leaders hammering out security guarantees on behalf of Ukraine without a Moscow representative present.

Mr. Trump said any guarantees would involve U.S. "coordination."

President Trump called Hungarian Prime Minister Viktor Orban on Monday to win his support for Ukraine to join the European Union (EU), a conversation that came after discussions with European leaders...

Finnish President Alexander Stubb saying Putin was 'not to be trusted' and French leader Emmanuel Macron demanding Europe be represented at any future meetings.

Two German warplanes were scrambled overnight from Romania after Russia launched a large-scale missile and drone attack in Ukraine less than a mile from the NATO borderline.

The US air force is prepared to police the skies above Ukraine to ensure peace, Donald Trump has said.

Foreign Minister Andrii Sybiha said the strikes highlighted why diplomatic efforts to end the war and stronger air defences were "critical".