After its majority/only export is ripped off in the U.S., the petite European duchy of Grand Fenwick declares war on America, so as to be swiftly defeated and compensated with rebuilding-aid funds. The impish comedy (which co-stars Jean Seberg) tickled U.S. audiences and ran for months in NYC (on-screen site of the “invasion”), securing Stateside appreciation for Sellers’ skills through his sharp comedic turns as two men—and as the Grand Duchess Gloriana XII.