Russian Deputy Prime Minister Alexander Novak warned Monday that a ban on Russian oil imports would have "catastrophic" consequences, as Western allies consider further sanctions on Moscow over Ukraine.

"A ban on Russian oil will lead to catastrophic consequences for the global market. The surge in prices will be unpredictable — more than $300 per b

Russia planned to open humanitarian corridors in Ukraine Tuesday for civilians to flee besieged cities, but Kyiv insisted the move was a publicity stunt and people would not be able to escape.

Moscow's offer to evacuate residents was condemned because most of the routes led into Russia or its ally Belarus, and as the invading forces maintained a

The International Atomic Energy Agency said Monday it has received reports of artillery shells damaging a nuclear research facility in Ukraine's besieged second city Kharkiv, but there was no "radiological consequence."

The Vienna-based UN body said Ukrainian authorities reported an attack took place on Sunday, adding that no increase in radiation