At least 19 Russian drones entered Poland's airspace overnight, with four shot down. Defence ministers from the E5 group of nations have met, but they would not say if they thought the attack was deliberate. Sky's Dominic Waghorn gives his analysis. https://news.sky.com/story/drones-and-salami-how-putin-is-testing-the-west-with-poland-airspace-violation-13428128 #europe #poland #russia SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on Twitter: https://

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