Alfred Nobel and various atomic bomb builders have both said the same, but have similarly failed to "end all wars". If you want a more malicious framing, it's

Alfred Nobel and various atomic bomb builders have both said the same, but have similarly failed to "end all wars". If you want a more malicious framing, it's "now that all your tanks and mortars are ineffective, when you want to have a war you'll need to buy lots of my drones"