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MIT builds swarms of tiny robotic insect drones that can fly 100 times longer than previous designs
(www.livescience.com)
This is a most excellent place for technology news and articles.
They are definitely super willing to break the seal, just nobody has built a good target ID system yet that won't fire on civilians.
If you just need everyone in a 10 mile radius dead, you could send in the hunter bots, or you could just shell the area with heavy artillery from three countries away. We already have that problem solved. Once we have a reliable target ID system I guarantee you'll start seeing unmanned equipment in war.