On Friday, Russia and Belarus are slated to initiate their joint military exercises, known as Zapad-2025. In response, Poland recently declared its intention to close its border with Belarus during the drills, describing them as “highly aggressive”. Following this, Russian drones intronuded into Polish airspace on Wednesday.
Source: http://www.euronews.com/2025/09/11/should-natos-eastern-bloc-expect-more-drone-attacks-as-russia-and-belarus-start-zapad-2025