the main casualty, and in which ancient hatreds feed on themselves". As the Bosnian conflict developed into a full war during spring 1992, Zimmermann supported the policy of foreign military interventionism. According to journalist Samantha Power, the author of A Problem from Hell: America and the Age of Genocide, Zimmermann’s career in Yugoslavia was marked by "frustration with the resistance of the Bush administration to intervene". His last official act before he was recalled to the United States on 16 May 1992, was to write a confidential memo called "Who Killed Yugoslavia?" to the secretary of state. Each of the five sections of the memo was headed by a verse from the poem "Who Killed Cock Robin?". In Zimmermann's analysis, the nationalism of the Balkan leaders had led to the demise of the country. Zimmermann resigned from the diplomatic service in 1994 in protest at President Bill Clinton's reluctance to intervene in the Bosnian War. He campaigned to persuade the U.S. that it must act to end what he reportedly saw to be "Serbian aggression in the killing fields of Bosnia" and was of the opinion that "NATO air strikes against the Serbs at any point during the war would have stopped the war and brought a negotiated agreement". Zimmermann went on to teach at Johns Hopkins University (1994–96) and Columbia University (1996–2000), and spoke out against human rights violations. Zimmermann wrote an account of his experiences in Yugoslavia, The Origins Of A Catastrophe (1996). According to what he wrote in the book, Franjo Tuđman claimed that Bosnia should be divided between the Croats and the Serbs in the Milošević–Tuđman Karađorđevo meeting. "Tuđman admitted that he discussed these fantasies with Milošević, the Yugoslav Army leadership and the Bosnian Serbs," writes Zimmerman, "and they agreed that the only solution is to divide up Bosnia between Serbia and Croatia". Works Following his ambassadorship in Yugoslavia, Zimmermann authored two books: Origins of a Catastrophe: Yugoslavia and Its Destroyers — America's Last Ambassador Tells What Happened and Why, published in 1996, and First Great Triumph: How Five Americans Made Their Country a World Power, a work about Theodore Roosevelt, Henry Cabot Lodge, John Hay, Elihu Root, and Admiral Alfred T. Mahan, published in 2002. Bibliography First Great Triumph: How Five Americans Made Their Country a World Power (Farrar, Straus and Giroux, 2004). References External links 1934 births 2004 deaths Deerfield Academy alumni Yale University