Around 600 drones were reportedly spotted heading towards Russia's capital from Japan. While the exact purpose of this large-scale drone deployment is uncertain, it's potentially linked to a technology demonstration or security exercise. The incident took place recently and has sparked a variety of discussions and concerns, especially around safety and airspace regulations.

In Japan, the operation of drones, especially large numbers in specific areas, is under strict regulation due to both safety and privacy concerns. This event has stimulated both curiosity and alarm among Japanese citizens. Public opinion varies, some believing it's a step forward for technology, others worry about the potential misuse and implications for personal security and international relations.

In comparison, both the US and EU have extensive regulations governing drone use, especially when it comes to flying over populated areas or international borders. Unauthorized or large-scale drone activity, such as this, would also draw extensive attention and likely result in immediate investigation and possible sanctions.