By Trevor Hunnicutt, Steve Holland and Jeff Mason WASHINGTON, Dec 15 (Reuters) - Ukraine could receive security guarantees ...

NATO chief Mark Rutte has warned that Russia is escalating its covert campaign, as an expert outlines a chilling three-stage ...

U.S. administration officials signaled Monday a peace deal between Russia and Ukraine may be closer than ever.

Sergey Ryabkov told ABC News Moscow cannot compromise on key territories.

The sweeping peace framework features “Article Five-like” security guarantees, a multibillion-dollar rebuilding plan, ...

Russia is a threat to the UK and our sons and daughters must be ready to fight, armed forces chief warns - Chief of defence ...

Trump envoys warn deal will not be on table forever but European leaders say it’s still unclear ‘whether Russia wants peace at all’. What we know on day 1,392 ...

Opinion: The tragedy of NATO expansion lies not in beginning it, but in never considering when and where it might end, argues ...

Ukraine claimed it carried out an underwater drone strike on Dec. 15, the first such attack in maritime warfare, that ...

By Colleen Howe and Emily Chow SINGAPORE, Dec 16 (Reuters) - Oil prices fell on Tuesday, adding to the previous session's ...

Two U.S. officials who spoke on the condition of anonymity said the arrangement would be similar to the NATO mutual defense ...

The U.S. has agreed to provide unspecified security guarantees to Ukraine as part of a peace deal to end Russia's nearly four ...