The Air Force of the Armed Forces of Ukraine issued a warning regarding a threat of aviation means of damage in the Sinelnikovsky district of the Dnipropetrovsk region over the past hour. The alert was broadcast between 2:34 AM and 3:34 AM UTC on September 21st, 2025. The specific nature of the aviation threat was not immediately detailed. This warning follows a documented Russian cruise missile strike on a civilian apartment complex in Dnipro earlier on September 21st, 2025, between 1:05 AM and 2:05 AM UTC. Ukraine_map reported that a Russian X-101 cruise missile was identified as the weapon used in that attack, which occurred at coordinates 48.42367, 35.00994. Ukraine's Deputy Minister of Foreign Affairs, Andrii Sybiha, was in New York during this period for UN General Assembly High-Level Week, where he engaged in diplomatic discussions regarding peace efforts and bilateral relations with Kazakhstan's counterpart, Murat Nurtleu. Separately, previous reports indicated Ukrainian drone activity in the Kharkiv region and concerns about Pentagon-imposed blocks on certain arms sales affecting European defenses.