Former Putin adviser Sergey Karaganov warned that Russia would use nuclear weapons against Europe should it ever come close to defeat.

Russia's "massive" military losses in Ukraine are unsustainable, NATO's secretary general warned with the conflict about to enter its fourth year with no clear end in sight.

Russia Foreign Ministry said in a statement the diplomat’s accreditation has been revoked and that the individual must now leave the country within two weeks. The U.K.’s charge d’affaires in Russia, Danae Dholakia, was summoned to the ministry’s Moscow headquarters to receive the notice.

Russia on Thursday expelled a British diplomat it said was an undeclared spy, but London said such "malicious and baseless" accusations undermined the basic conditions needed for embassies to operate and said it was considering a response.

Up to 25,000 Russian soldiers are being killed every month, NATO Secretary General Mark Rutte said this week.

Four years after David Barnes was charged in Russia with abusing his children in Texas despite not being charged with a crime in the U.S., he is now in a penal colony.

An ally and former adviser to Russian President Vladimir Putin and former President Boris Yeltsin said the country could use nuclear weapons against Europe should Russia ever be on the verge of

Russia said on Thursday that NATO's talk of Russia and China being a threat to Greenland was a myth designed to artificially whip up hysteria and that what it called the Western alliance's policy of escalating confrontation in the Arctic was extremely dangerous.