The U.S. State Department Central Files are the definitive source of American diplomatic reporting on political, military, social, and economic developments throughout the world in the 20th century. Concentrating exclusively on those Central Files that have not been microfilmed by the National Archives or other publishers, UPA's microfilm editions of the Central Files nonetheless dwarf the State Department's very selective volumes of the Foreign Relations of the United States (FRUS). Containing less than one percent of the material in the Central Files, FRUS focuses on U.S. relations with individual countries but does not include coverage of many of the key topics to which the majority of the original files are devoted. Each part of the Central Files contains a wide range of materials from U.S. diplomats in foreign countries: special reports on political and military affairs; studies and statistics on socioeconomic matters; interviews and minutes of meetings with foreign government officials; court proceedings and other legal documents; full texts of important letters, instructions, and cables sent and received by U.S. diplomatic personnel; voluminous reports and translations from foreign journals and newspapers; and countless translations of high-level foreign government documents. This new collection-which does not duplicate the Palestine-Israel files-documents in rich detail the burning issues of the period, including the many proposals formulated to resolve the situation in Palestine; the 1948 war and its aftermath; the Palestine Conciliation Commission; the activities of the Truce Commission established by the UN Security Council; and the international community's efforts to mitigate the conflict under the auspices of the United Nations Relief for Palestine Refugees, the Near East Relief and Works Agency, and the Palestine Claims Commission.