From the Washington Post…..

The Chinese stole the design secrets to all — repeat, all — U.S. nuclear weapons, enabling them to leapfrog generations of technology development and put our nuclear arsenal, the country’s last line of defense, at risk. To this day, we don’t know quite when or how they did it, but we do know that Chinese intelligence operatives are still at work, systematically targeting not only America’s defense secrets but our industries’ valuable proprietary information.