These nuclear breakthroughs are increasing the risk of a third world war

A growing tech gap between US and its rivals could lead to unraveling of arms control agreements

At a time of growing tensions between nuclear powers — Russia and NATO in Europe, and the U.S., North Korea, and China in Asia — Washington has quietly upgraded its nuclear weapons arsenal to create, according to three leading American scientists, “exactly what one would expect to see, if a nuclear-armed state were planning to have the capacity to fight and win a nuclear war by disarming enemies with a surprise first strike.”

Writing in the Bulletin of Atomic Scientists, Hans Kristensen, director of the Nuclear Information Project of the Federation of American Scientists, Matthew McKinzie of the National Resources