Donald Trump has signalled his support for a package of security guarantees for Ukraine, including foreign boots on Ukrainian soil from around 10 European countries, in a new push to pressure Russian ...

Prime Minister Keir Starmer of Britain called for an international force stationed in Ukraine, which could range from ...

Ukraine and its European allies have been buoyed by Trump's promise during a summit on Monday of security guarantees for Kyiv, but many questions remain unanswered ...

That includes some officials who worked on the assessment that Russia interfered in the 2016 presidential election.

Rather than exploiting Russia’s weaknesses, a drone-centric NATO could be playing to Russia’s strengths, some experts warn.

There are inherent contradictions in the idea of the guarantees meant to prevent Russia from attacking Ukraine again.

Trump gave his assurance that no American soldiers would be sent to protect Ukraine as part of a peace deal with Russia ...

Clearly, it’s going to take “severe measures,” to use Trump’s own words, to get Moscow not to just sit at the bargaining table but stay for dinner.  But what measures need to be up for discussion ...

Outer space has emerged as the world's next battlefield, demonstrated by recent cyberattacks on satellites blamed on Russia.

President Donald Trump said on Tuesday he has ruled out putting U.S. troops on the ground in Ukraine, but said the United States might provide air support as part of a deal to end Russia's war in the ...

President Donald Trump said he’s begun arrangements for a face-to-face meeting between Vladimir Putin and Volodymyr Zelenskyy ...

I briefed him on strategic arms issues and negotiations with Russia while we were flying on Air Force One. He was in his cabin watching a FIFA soccer match, so I had to compete for attention with that ...