Security experts warn Pentagon's decision to withhold promised defense systems from Ukraine may embolden Russian President ...

A bombshell new CIA review of the Obama administration’s spy agencies assessment that Russia interfered in the 2016 ...

The rift, provoked by the deaths of two ethnic Azerbaijanis in Russian custody, was the latest in a series of spats that ...

A specialist Royal Navy submarine was scrambled to track its Russian counterpart, caught sailing west through British waters.

NATO Chief Mark Rutte also ridiculed the Russian foreign minister’s lengthy tenure “since the birth of Jesus Christ” in his latest interview on Fox News.

Ukraine summoned a senior United States diplomat on Wednesday, urging its key ally not to cut or delay critical military aid after the White House said it was halting some weapons shipments.

Democrats — who during Trump’s first term pressed for his impeachment over holding up money to arm Ukraine to secure information on the dealings of his main Democratic rival, ...