Russian President Vladimir Putin's war in Ukraine and President Trump's tough stance on NATO have 'energized' the alliance into action, experts explain unique circumstances that led to unprecedented commitments.

Ukraine's air force said on Monday Russia had fired 426 drones and 19 cruise missiles at the country overnight, as well as five hypersonic ballistic missiles.

The British defense chief is expected to urge Ukraine’s Western partners at the meeting to launch a “50-day drive” to get Kyiv the weapons it needs to fight Russia’s bigger army.

Ukraine said it would send a high-level negotiating team to Turkey peace talks with Russia, even as Moscow wrote off the talks before they had started.

The Kremlin warned of escalating nuclear tensions and said Russia was taking action to protect its security in response. Dmitry Peskov, spokesman for Russian President Vladimir Putin, said there is "clearly no basis" for holding a summit of the "Nuclear Five" members of the UN Security Council—the U.S., Russia, China, the U.K., and France.

Ukraine and Russia will resume face-to-face peace talks in Turkey on July 23 amid escalating airstrikes and entrenched demands from both sides.

Russia has officially recognized the Taliban as Afghanistan’s legitimate government, marking the first time a major global power has established form

Flight data showed how American and British reconnaissance aircraft flew from England toward Russia on Monday.

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