After multiple Russian drones violated NATO airspace, Europe faces questions over the alliance’s long-term ability to deal with this growing threat.

Russia has been heavily sanctioned by the international community in the wake of its full-scale invasion of Ukraine, but while a country or company may not be involved in directly exporting its technology to Russia, it's still possible for foreign-made parts to end up there via approaches beyond their control.

Police bomb disposal experts neutralized the combat units of two Russian drones in the Chernihiv region. — Ukrinform.

It was the second time in less than a week that a Russian drone had flown through a NATO member’s airspace. Last week, NATO scrambled fighter jets to shoot down Russian drones in Polish airspace.

Russia continued its nightly strikes on Ukraine -- including the capital Kyiv -- as U.S. President Donald Trump prepared to depart for his state visit to the U.K.

Russian Telegram channels have reported that explosions were heard in the city of Saratov on the night of 19-20. A fire has likely occurred at an oil refinery. Source: Astra and other Telegram channels Details: Explosions were heard in Russia's Saratov.

Ukraine is struggling to defend itself against the growing number of attack drones that Moscow has started using in its onslaughts.

"If it had all happened at once, maybe you could call it an accident. But six hours of drones? That’s a test – a way to see what the West would do. And we have to respond like it’s a test," Kellogg said.