Re: Why would a foreign power waste time and effort inflicting chaos on the UK
in the event of a conflict, what's cheaper, a couple of missiles, or a couple dozen drones?
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In terms of cost-effectiveness? A couple of missiles.
It's hard enough to bring down an aircraft with purpose built missiles that it took most countries around 40 years to figure out how to do it more often than not.
Drones are a psychological threat and a nusiance, but relatively unlikely to actually produce serious damage... or to hit a moving aircraft at all.