Drone attack on Israel puts spotlight on Iron Dome's limitations

Here in northern Israel we hear booms at regular intervals as Iron Dome intercept rockets that Hezbollah fires from southern Lebanon. Israel says it hits more than 90% of its targets. But Iron Dome works because Hezbollah's rockets are crude – and it's possible to calculate where it's rockets will go at take-off and then intercept them. Stopping drones is more complicated. And has in this war become a recurring problem.