Humans are already capable of blowing up the world to smithereens many times over with the weaponry available. But it seems this is not enough, as the military industrial complex keeps on coming up with new, even more devastating equipment. Some are so advanced they considered top secret. Following is a list of some of the most dangerous advanced weapons that you will not believe exist. From the electromagnetic railgun that can shoot at speeds of 3km/s to the Autonomous Weapons systems which can conduct operations without a human crew, these weapons are very scary.