Over the past hour, between 1:31 AM and 2:31 AM UTC on September 15th, 2025, the Ukrainian Air Force reported drone activity in the Sumy and Chernihiv border regions, as well as in the Zaporizhzhia region. A UAV was observed heading west along the border of Sumy and Chernihiv regions, and another enemy reconnaissance UAV was detected in the Zaporizhzhia area, with potential air defense engagement. Earlier reports from the previous day indicated a significant increase in NATO's technological acceleration, including counter-unmanned aerial systems (UAS) and artificial intelligence in training, as stated by NATO ACT on X. This comes amid Polish President Karol Nawrocki's approval for NATO troops to be stationed on Polish territory as part of Operation "Eastern Guardian," following previous Russian drone attacks. Additionally, an ammunition detonation on a train carrying military cargo in the Kyiv region on the night of September 14th, 2025, disrupted rail traffic. The incident, which occurred near Kalynivka, led to the detachment of three wagons and is under investigation by the Ukrainian General Staff and Suspilne. Several trains were delayed and rerouted, including the Kharkiv–Przemyśl train, during the period of 11:16 PM to 11:31 PM UTC on September 14th. In a separate development, Rheinmetall and Lockheed unveiled a new tank destroyer armed with 24 missiles, as reported by Defence_IDA on X, though its operational context remains unconfirmed. France had also confirmed the deployment of three French Rafale jets to Poland as part of NATO's Operation "Eastern Sentinel."
