Vladimir Putin has been warned he may be left with little choice but to use Russia's nuclear arsenal if the war in Ukraine drags on even longer, with the military and economy both under strain

Vladimir Putin may now have only one option left in Ukraine, as the conflict, which has been ongoing for over two years, significantly destabilizes the Russian economy. After nearly three years of fighting with its neighbor,

President-elect Donald Trump has spoken to Russian President Vladimir Putin and urged him not to escalate the war in Ukraine, the Washington Post said Sunday.