Global Zero, which advocates for the elimination of nuclear weapons, released a statement from Executive Director Derek Johnson marking the start of “a countdown to nuclear chaos.”

Global Zero CEO Derek Johnson issues a warning on the one-year deadline to extend New START: “‘Today marks a countdown to nuclear chaos.'”

Global Zero U.S. Chair Richard Burt warns against allowing New START to expire: “then we’re living in a world where there’s no longer any real transparency or predictability in the U.S. – Russia nuclear competition.”

Global Zero CEO Derek Johnson is quoted on the Doomsday Clock announcement: “‘At just 100 seconds to midnight, the Doomsday Clock makes clear we are nearly out of time.'”

Nuclear Crisis Group member Thomas Countryman and other experts offer insight on the possible consequences of U.S.-Iran conflict for U.S. negotiations with North Korea.