WASHINGTON (AP) — As the rest of the world rushes to harness the power of artificial intelligence, militant groups also are experimenting with the technology, even if they aren't sure exactly what to do with it. For extremist organizations, AI could be a powerful tool for recruiting new members, churning out realistic deepfake images and refining their cyberattacks, national security experts and spy agencies have warned. Someone posting on a pro-Islamic State group website last month urged a...