The new doctrine allows for a potential nuclear response by Moscow even to a conventional attack on Russia by any nation that ...

Days after President Biden eased restrictions on Ukrainian use of American-made weapons, Russia said it was struck by six U.S ...

Markets sold off Tuesday as geopolitical tensions escalated between Ukraine and Russia. The Dow fell 300 points, or 0.7%; and ...

Kremlin spokesperson Dmitry Peskov said Tuesday that Russia's new nuclear weapons doctrine means Ukraine's use of Western rockets "can prompt a nuclear response." ...

The Biden administration has authorized Ukraine to use U.S.- supplied longer-range missiles to strike deeper into Russian ...

Russian leader Vladimir Putin shows no signs of backing down in its war on Ukraine, regardless of what Donald Trump claims.

Ukraine has fired US-made ATACMS missiles into Russia’s Bryansk region, Russia’s Defense Ministry said, in a major escalation ...

Oil futures trimmed losses to trade near unchanged after Russian President Vladimir Putin signed a revised nuclear doctrine declar ...

Should ATACMS be launched at targets deep within Russia, Putin would be required to retaliate—escalating an already dangerous ...