China's military is developing electromagnetic pulse weapons that Beijing plans to use against U.S. aircraft carriers in any future conflict over Taiwan, according to an intelligence report made public on Thursday. Portions of a National Ground Intelligence Center study on the lethal effects of electromagnetic pulse (EMP) and high-powered microwave (HPM) weapons revealed that the arms are part of China’s so-called “assassin’s mace” arsenal - weapons that allow a technologically inferior China to defeat U.S. military forces.