A security camera has captured the moment a suspected Russian missile exploded on Polish soil, near the border with Ukraine. The incident occurred during one of Moscow's largest aerial bombardments of Ukrainian territory. Polish and NATO authorities are now investigating how the projectile crossed into NATO airspace. Main Developments Video footage from a security camera shows the missile striking a location inside Poland, close to the Ukrainian frontier. The blast was recorded amid a massive Russian air assault on Ukraine. Polish officials confirmed the explosion and are working alongside NATO to determine the missile's origin and trajectory. Read also: Iran-Linked Hackers Blamed in Minnesota Water System Cyberattack Background This is not the first time a stray projectile has landed in Poland during the war in Ukraine. A previous incident in November 2022 killed two people when a Ukrainian air-defense missile fell on Polish territory. In that case, Kyiv acknowledged responsibility. The current event, however, involves a suspected Russian missile, heightening tensions between Moscow and NATO. Why It Matters Any confirmed Russian missile strike on NATO territory could trigger the alliance's collective defense clause under Article 5. Even an accidental incursion tests the alliance's resolve and risks escalating the conflict beyond Ukraine's borders. The incident also raises questions about the effectiveness of NATO's airspace monitoring and response protocols. What's Next Polish and NATO investigators will analyze debris and flight data to confirm the missile's type and origin. The alliance is expected to issue a formal statement after the investigation concludes. Poland may request additional air-defense support from NATO partners in response to the incident.