P-700 Granit

Russians have built an anti-ship cruise missile that is meant to be fired in groups of about 8. On the way to the target, they all fly very low to hide from radar, except one. One will fly higher up, acting as a spotter and guide and use its radar to look for ships and will guide the others. If it is destroyed (because it flying higher and easier to detect) another missile in the group will rise up and take over the role of guide. And if it is destroyed another and so on. The guiding missile will also make an assessment of the targets if it finds multiple ships, prioritizes and then designate the targets for the other missiles. If a ship is destroyed it will reassign targets. They were designed to take out carrier task forces. They’ve been operational since 1985. Basically, the Russians have had suicidal, swarming, co-operating drones for thirty years.