The Mouse That Roared (1959) / Musen Som Brølte
Beloved British satire traces the hilarious efforts of the tiny, backward European country of Duchy of Grand Fenwick to escape bankruptcy by declaring war on the United States so they can quickly surrender and be repaid in foreign aid... but that's assuming they lose the war! Jack Arnold directed this adaptation of Leonard Wibberley's 1955 novel, starring Peter Sellers in three roles; with Jean Seberg, Leo McKern, William Hartnell.