US condemned attack as dangerous and inexplicable escalation at UN Security Council meeting. Tammy Bruce warned attack risks expanding and intensifying the war. Moscow claims strike responded to Ukrainian attack on Putin's residence; US and Kyiv deny it. Kharkiv governor confirmed two deaths and three wounded; local reports say children's medical facility and civilian energy infrastructure were hit. Last week's attack followed progress on US-led peace deal and alarmed NATO after strike near Poland. Kremlin condemned US seizure of Russian-flagged oil tanker, escalating tensions