George Shultz, Ronald Reagan's genial secretary of state who identified a diplomatic opening that helped end the Cold War but contributed to a new brand of conflict by advocating preemptive strikes, has died. He was 100. "One of the most consequential policymakers of all time, having served three American presidents, George P. Shultz died Feb. 6 at age 100," the Hoover Institution think tank said in a statement published on its website. jm/bbk