Paul-Henri Spaak the signature, on 25 March 1957, of the Treaties of Rome establishing a European Economic Community and the European Atomic Energy Community (Euratom). Paul-Henri Spaak signed the treaty for Belgium, together with Jean Charles Snoy et d'Oppuers. His role in the creation of the EEC earned Spaak a place among the Founding fathers of the European Union. In 1956, he was chosen by the Council of NATO to succeed Lord Ismay as Secretary General. He held this office from 1957 until 1961, when he was succeeded by Dirk Stikker. he feuded constantly with French president Charles de Gaulle. He publicly
Yugoslavia and the European Economic Community refused the proposal. In June 1991 an EEC mission formed by the foreign ministers of Luxembourg, Italy and the Netherlands visited Belgrade, where they talked with Yugoslav Prime Minister Ante Marković, as well as Zagreb, where they talked with Presidents Milan Kučan of Slovenia and Franjo Tuđman of Croatia. The mission members stated that almost $1 billion in economic aid would be suspended if Yugoslav military offensive continued as well as that the EEC favors the preservation of Yugoslavia as a single entity. Members of the EEC were divided over the importance they should give to the potentially contradictory principles