For the last century, since the rise of mechanised and then nuclear warfare, defence budgets are designed to stop big existential attacks. Ships, planes, submarines.But cheap, retail store level technology - drones - have changed the game in the conflicts involving Ukraine and Israel. There’s no real way to immunise against a drone swarm that’s been smuggled into your country and hidden in a truck. These covert attacks are relatively cheap to deploy and incredibly effective. Like the nuclear bomb, the machine gun, and the crossbow - drones mean the traditional way we fight wars is finished.Follow If You're Listening on the ABC Listen app.Check out our series on YouTube: https://www.youtube.com/playlist?list=PLDTPrMoGHssAfgMMS3L5LpLNFMNp1U_Nq

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