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 ...

President Vladimir Putin on Tuesday formally lowered the threshold for Russia's use of its nuclear weapons, a move that follows U.S. President Joe Biden's decision to let Ukraine strike targets inside ...

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

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

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 ...

A decree signed by the Russian leader, though long-planned, came days after President Biden authorized the use of ...

President Joe Biden's administration has allowed Ukraine to use U.S.-made ATACMS missiles to strike deep into Russia, two U.S ...