Last year, current and former world leaders joined experts to conduct a tabletop exercise simulating a deadly monkeypox outbreak. And now, the results of that exercise are attracting fresh attention, with monkeypox making headlines after cases were reported in a dozen countries—including the U.S., U.K. and Australia—in a surprising outbreak of a disease that rarely appears outside of Africa. The Nuclear Threat Initiative (NTI) partnered with the Munich Security Conference for its annual exercise on March 17, 2021—virtually due to COVID-19— and summarized the scenario, key findings and actionable recommendations in a report released in November. The NTI's exercise scenario...