American spy agencies seemed rattled by the experiments too. I was shocked when the next Worldwide Threat Assessment—the annual report presented by the U.S. intelligence community to the Senate Armed Services Committee—described genome editing as one of the six weapons of mass destruction and proliferation that nation-states might try to develop, at great risk to America. (The others were Russian cruise missiles, Syrian and Iraqi chemical weapons, and the nuclear programs of Iran, China, and North Korea.)
