U.S. President Donald Trump's Ukraine envoy Keith Kellogg began talks in Kyiv on Monday on security and sanctions against ...

Matthew Whitaker, U.S. Ambassador to NATO, joins CNBC's 'Squawk Box' to discuss the push for Russian sanctions, what to ...

The president has become increasingly exasperated with Vladimir Putin and has repeatedly laid into the Russian leader for ...

President Donald Trump will meet with NATO Secretary-General Mark Rutte to announce plans to sell weaponry that they can then ...

Poland and the Baltic states also withdrew from the Ottawa Convention despite pleas from some leaders to maintain decorum in ...

"We are very unhappy, I am, with Russia," Mr. Trump said Monday while in a meeting with NATO Secretary General Mark Rutte.

NATO member Poland scrambled fighter jets overnight as Russia launched record numbers of drones and missiles at neighboring ...

Russia has criticised the planned deployment of longer-range U.S. missiles in Germany as a serious threat to its national ...

During his campaign, Trump said bringing a quick end to the war was a top priority and that helping Ukraine was a waste of US ...

President Donald Trump on Monday confirmed that the U.S. has agreed to sell arms to NATO just moments after he said Russian President Vladimir Putin has 50 days to secure a peace deal with Ukraine or ...

NATO and Russia have found themselves opposed for decades in one of the most consequential standoffs in military history.

In a statement, NATO said NATO Secretary General Mark Rutte will be in Washington on Monday and Tuesday and meet with ...