The head of Britain’s foreign intelligence service says Russia is conducing a “staggeringly reckless” sabotage campaign against Ukraine's allies that risks dangerously escalating the conflict.

The speech by Richard Moore, chief of MI6 was aimed in-part at President-elect Donald Trump's impending second term.

Workers at one of Ukraine's thermal power plants struggle to repair damage and keep electricity flowing as Russia continues its campaign of attacks targeting the country's power grid.

President Vladimir Putin said on Thursday that Russia would use all weapons at its disposal against Ukraine if Kyiv were to acquire nuclear arms. The New York Times reported last week that some unidentified Western officials had suggested U.

More than a million households in Ukraine were left without power after a “massive enemy attack” overnight by Russia, targeting critical energy infrastructure facilities, CNN reported. Russian President Vladimir Putin claimed on Thursday that the air assault was in response to Ukrainian strikes in Russian territory using US-made ATACMS missiles.