Poland says it shot down multiple Russian drones in its airspace, the first time a NATO country is known to have directly fired on Russia since it invaded Ukraine. While this isn't the first time a Russian attack has crossed into another country's airspace, Andrew Chang explains why this time is different — and examines why the escalation is of particular global concern. Images provided by Getty Images, The Canadian Press and Reuters. Intro: 00:00 The attack: 00:40 Poking the bear: 3:30 »»»