In response, Putin says nukes should 'never be unleashed' since there would be 'no winners' in such war

Countries seek 'false security' by spending hundreds of billions on 'doomsday weapons,' Guterres warns, saying almost 13,000 nuclear weapons are in arsenals around the world

Tehran says religious ruling against weapons of mass destruction remains in place after top official said Iran was capable of making atomic bombs

Head of Russian state TV warns Western support of Ukraine could lead to 'total annihilation' of country; Zelensky: Putin seeks to 'disband' Europe

Russian leader says move a response to 'aggressive statements' by NATO member countries; UK foreign secretary says world must prepare 'for Russia to seek to use even worse weapons'

Unrest in Iran, Lebanon and Iraq shows that sanctions work, Israel Katz tells foreign diplomats at conference

Former and possibly future chancellor says Vienna will 'act united and determinedly' against Tehran's nuclear ambitions