Baltic NATO allies are preparing for a potential Russian attack, fearful that Moscow has ambitions beyond Ukraine.

Former Russian President Dmitry Medvedev, who serves as deputy chairman of the Russian Security Council, met North Korean President Kim Jong Un during visit to North Korea, Russian state-run news agencies reported on Friday.

Scores of sanctions from the US, EU, UK and others have weakened Russia’s economy, but not its resolve to carry on fighting. What’s now needed is not just more but smarter penalties, experts say.

Russia has accused the U.K. of plotting a sabotage operation in a move that shows Moscow is setting the conditions for a conflict with NATO, according to the Institute for the Study of War (ISW).

A supply of U.S. Tomahawk cruise missiles to Ukraine would help "push Russia back," the foreign minister of NATO ally Estonia told ABC News.

A fresh drone and missile barrage on energy facilities in the early hours of Friday triggered power cuts across nine Ukrainian regions, after Russian strikes already crippled almost 60 per cent of the country’s gas production.

The European Union's top official warns that Russia is conducting a "targeted gray zone campaign" against Europe.

Russia has long since exhausted its supply of modern main battle tanks—and is quickly running out of antiquated reserves, too.

Russia’s war in Ukraine has sparked a demographic crisis and labor shortage, fueled by military casualties, emigration, and a shrinking population with economic impacts.

Russia struck Ukraine’s power grid overnight into Sunday, damaging energy infrastructure in multiple regions and wounding two employees of the country’s largest private energy company.