Debra Cagan, senior fellow at the Atlantic Council's Eurasia Center, highlights the legal framework of Article 51 of the UN Charter, asserting Ukraine's legitimate right to strike targets within Russian territory that pose a threat of warfare.

"Under Article 51 of the UN Charter...Ukraine has a perfect right of hitting targets in Russia that can deploy the means of war," noted Cagan. She dismissed calls for Ukraine to halt such actions as "ridiculous".