Polish President Karol Nawrocki signed a resolution granting permission for NATO troops to be stationed on Polish territory as part of Operation "Eastern Guardian" within the reporting window of September 14th, 11:46 PM to September 15th, 12:46 AM UTC. This deployment follows previous Russian drone attacks on Poland, according to a statement from visionergeo on X. NATO troops have commenced their deployment on Polish soil, as confirmed by visionergeo. This development is part of NATO's ongoing efforts to bolster its eastern flank, a move that aligns with earlier reports of NATO's acceleration of new technologies, including counter-unmanned aerial systems (UAS) and artificial intelligence in training, as stated by NATO ACT on X. France had previously confirmed the deployment of three French Rafale jets to Poland as part of NATO's Operation "Eastern Sentinel." In a separate development within the same reporting period, Rheinmetall and Lockheed unveiled the world's first tank destroyer armed with 24 missiles, as reported by Defence_IDA on X. Details regarding the specific operational context or deployment of this new armament were not immediately available. Earlier activity in the reporting window saw disruptions to Kyiv rail traffic due to an overnight ammunition detonation on a train carrying military cargo on the night of September 14th, 2025. This incident, which occurred in the Kyiv region and led to the detachment of three wagons, is under investigation by the Ukrainian General Staff and Suspilne. Cleanup operations were ongoing, with no personnel injuries reported according to Suspilne. Several trains were delayed and rerouted in the Kyiv region following this reported explosion, including the Kharkiv–Przemyśl train, as indicated by Suspilne reports from between 11:16 PM and 11:31 PM UTC on September 14th. Ukrainian drone activity was also noted in the Dnipropetrovsk region during the earlier part of the reporting window. Reports from "Дніпро Alerts 🚀 🚨" and the Air Force of the Armed Forces of Ukraine indicated UAVs heading west in the eastern part of the region. This follows earlier alerts from September 14th indicating a threat of "Shahaneda" drones near Kryvyi Rih and observations of drone clusters passing Zelenodolsk/Apostolov to the north.