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

Russian President Vladimir Putin on Monday said he will not send conscripts or reservists to fight in Ukraine and that "professional" soldiers fulfilling "fixed objectives" were leading the war.

"Conscripted soldiers are not participating and will not participate in the fighting. There will not be an additional conscription of reservists either,"