"Moscow requested a meeting of the U.N. Security Council over Europe's alleged "threats to international peace and security," Russia's U.N. envoy, Dmitry Polyansky, said on May 27, only a day after Russia launched its largest drone attack against Ukraine.
Russia launched a three-day wave of aerial attacks from May 24 to May 26, firing more than 600 drones and dozens of missiles across Ukraine. On May 26, Russian forces carried out the most extensive drone attack of the full-scale war, reportedly involving 355 Shahed-type attack drones and decoys.
Moscow, which holds a permanent seat in the U.N. Security Council, requested the session because of what it called attempts by European countries to prevent a peaceful settlement of the war in Ukraine, according to Polyansky."
https://kyivindependent.com/after-3-days-of-consecutive-attacks-at-ukraine-russia-calls-for-un-security-council-meeting/