Tech billionaire says Kyiv meant to sink fleet; biographer says SpaceX owner was warned by Russian ambassador that Crimea attack would lead to nuclear retaliation

Kyiv denies involvement, says drone strike on Kremlin staged by Russia, amid series of sabotage attacks on Kremlin's interests in lead up to anniversary of World War II victory

Medvedev declares relations with West 'worst in history,' warns chances of 'nuclear apocalypse' grow each day Ukraine receives foreign-supplied weapons

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

Dmitry Medvedev accuses Western allies of siding with 'the Nazi,' repeating falsehood about Ukraine; does not provide details on nature of new armaments in development

Former president, who once cast himself as a liberal modernizer, says Moscow has ability to 'send all our enemies to fiery hell'

Comments to Hebrew media come after Russian ex-president warned move would 'destroy all' ties between Jerusalem and Moscow

Key Putin ally Medvedev says would be 'reckless move'; warning comes after Israeli minister calls for Ukraine to get military aid after reports Iran to supply Russia with missiles

Former Russian president charges Ukraine's allies would not risk nuclear war if Kremlin decided to use weapon; Washington has warned of 'catastrophic consequences'

Putin introduces law just days after announcing huge reservist call-up, sparking rare public protests; deputy defense minister replaced amid Ukrainian territorial gains