The Current research which is entitled (( The Policy of the United States towards the Syrian _Egyptian Unity from1958 to 1961, according to The Documents of the US State Department )) Deals with the Policy of the United States towards the unity to the United States recognition of the Syrian _ Egyptain unity . in addition to that , The research deals with the circumstances that paved the way to the separation between the two countries finally . The study also deals with the regional attitude from the U.S.A Policy towards the establishment and collapse of the United Arab Republic. I studied these developments through US State Department documents, which are considered an important source for studying historical events, especially contemporary ones, as the correspondence contains notes of reports and important telegrams between the US State Department and its embassies in Cairo, Damascus, Amman, Baghdad and Ankara.