Ukrainian president claims Russian president would be 'unable... to preserve... his life' if he carries out threatened attack

Kremlin watchers believe nuclear action is unlikely, but also note that brinkmanship could escalate even before a bomb is used

In newly declassified remarks to reporters, then-outgoing US president places ex-Israeli PM in same basket with Erdogan, Duterte and Trump in war of ideas against liberal democracy

Pontiff implores Russian leader to stop 'spiral of violence and death,' while requesting Zelensky 'be open' to peace proposals

Ukraine begins to recapture Lyman in Donetsk, which Putin declared as part of Russia on Friday

State nuclear company says Russian troops stopped car of director-general of Zaporizhzhia plant, blindfolded him and took him to undisclosed location, hours after Putin declaration

Analysts say preparations would be visible, and they are 'quite certain' there are no hidden facilities; likely Moscow would want West to see what it is doing as a warning

Russian president castigates US and its allies for their colonialist history, links hands with leaders of Moscow-backed Ukrainian regions in show of unity after signing accession

World faces threat of nuclear war as Ukraine's application to join NATO sets scene for confrontation between Moscow and world powers

G7 may punish countries that back Moscow's claims on Ukrainian regions, Washington warns; EU vows to 'never recognize' move; Italian far-right leader slams 'neo-imperialist' Putin