He told the New York Times that he thinks the U.S. will “very likely” find itself in a three-front war with China, Russia, and Iran. As a result, he said, the Pentagon should continue developing autonomous weapons at full speed, pointing to big mismatches in how far the U.S. would be willing to go while fighting a war compared with other countries.
Iran would be a non-issue in an actual war with us. Occupying it would be a far different story. Same with Russia. China, on the other hand, would be extremely devastating to both sides.