In 10-minute chat, Blinken says he told Lavrov to 'end this war of aggression, engage in meaningful diplomacy that can produce a just and durable peace'

Parliament's lower house ratifies partial withdrawal from New START treaty; deputy head of Russia's Security Council threatens nuclear strike if pushed by West

President repeats unfounded claim that his forces are fighting a 'neo-Nazi regime' in Ukraine, insists sanctions over invasion 'won't succeed,' vows to continue war

State Department says Moscow's refusal to facilitate inspection activities prevents the US from exercising important rights under New START pact

Ties between Russia and the US, already strained for years, have reached new lows since Putin sent troops to Ukraine last year

Taylor Dudley let out of custody, with no announced prisoner swap, a month after WNBA star Britney Griner's release; unclear why he was detained

Team known as Cold River created fake login pages and emailed scientists in bid to get to their passwords; unclear if effort was successful

Russian president asserts his goal is to 'unite the Russian people,' declares that all US-supplied Patriot air-defense missiles deployed in Ukraine will be destroyed

Ukrainian president predicted to secure almost $2 billion in military aid from Washington in his first known wartime foreign trip

Kyiv-born Alexey Brayman said to have used his New Hampshire home for the shipment of sensitive components, including semiconductors used in ballistic missiles; 6 others indicted