In Dnipro, a rocket struck a residential multi-storey building, according to the city's mayor, reported between 4:05 AM and 4:35 AM UTC on September 20th. This incident occurred amidst a wave of continued Russian missile and drone activity across Ukraine. During the same period, Ukraine's Air Force reported UAVs moving west in the center of Chernihiv region and towards Shostka in the north of Sumy region. "Тривога INFO ⚠️ Новини" also reported "starters of shock UAV type 'ShahED-136/131' from the landfill, some time ago the northern direction." The Air Force of Ukraine confirmed the landing of 3x Tu-95MC aircraft at Dyagilevo airfield in the Ryazan region, with another two Tu-95MCs in the air preparing to land. Separately, the Estonian General Staff reported on September 19th that three Russian MiG-31s violated Estonian airspace near Vaindloo Island for approximately 12 minutes. The Russian aircraft had no published flight plans and their transponders were disabled, preventing communication with Estonian air traffic control. The Institute for the Study of War (ISW) assesses that Russia is deliberately attempting to gauge NATO's capabilities and reactions with such incursions. Previous reports from earlier this morning detailed significant Russian missile and drone attacks across multiple Ukrainian regions, including Dnipropetrovsk, Kyiv, and Ternopil, with damage reported to a high-rise building in Dnipro. These attacks followed earlier ballistic missile strikes on Pavlograd and Mykolaiv.