Could Four Simmering Global Crises Boil Over?

More than once, I have heated milk on a gas stove only to have it boil over disastrously. The U.S. and its allies face at least four major and converging challenges that may also boil over like overheated milk, perhaps simultaneously. Social scientists will have more sophisticated frameworks, but this homely analogy of the full gas stove frames my points. [ABSTRACT FROM AUTHOR]