The Kremlin warns Kyiv's use of such missiles would mark an escalation in the conflict, hours after Joe Biden gives the green light.

Lawmakers in both parties are generally offering support for President Biden’s decision to authorize a major shift in U.S.

Russian state TV talking heads are looking to President-elect Donald Trump to overturn Biden's missile move. This live blog ...

President Joe Biden officially authorized Ukraine to use U.S.-supplied long-range missiles Sunday for strikes inside Russia, ...

Any deal will likely be favorable to the Russians, though the clock on Putin’s ability to sustain a wartime economy may be ...

Vladimir Putin has updated Russia's nuclear doctrine after Joe Biden gave Ukraine the approval to use U.S.-provided weapons ...

Ukraine launched U.S.-supplied long-range missiles into Russian territory, prompting Russia to lower its nuclear weapon use ...

Being able to move from a primarily defensive posture and take a more offensive approach is a big step forward towards ...

Moscow says Ukraine fired six American-supplied longer-range missiles at Russia’s Bryansk region. The Kremlin's announcement Tuesday would mark Kyiv’s first use of the weapons inside Russia in 1,000 d ...

Russia will ‘engage in nuclear deterrence against those countries that offer their territory, maritime zones, airspace, and ...

Ukraine launched U.S.-made long-range missiles into Russia on Tuesday, according to Russian officials, firing the Army ...