Mansoureh Ebrahimi, Kamaruzaman Yusof, Abdul Basir Mohamad , British Responses Towards Iran after Approving the Nationalization of Oil in 1951, International Business Management, Volume 6,Issue 2, 2012, Pages 277-285, ISSN 1993-5250, ibm.2012.277.285, (https://makhillpublications.co/view-article.php?doi=ibm.2012.277.285) Abstract: The present study investigates the British responses after the nationalization of the Iranian oil industry. In fact, the nationalization of oil is a turning point in the study of contemporary history of Iran in that it determines its future incidents in the overt aspect the 1953 coup that terminated to collapse Prime Minister Dr. Mosaddeq from power. The British government stated the protesting reactions after the nationalization of oil. The present study investigates three main targets. In the first place, it attempts to study the British policy to put apparent calm negotiations in place by the mediation of Americans. Secondly, it elucidates that the British took another two different reactions; moreover, violence military threat as well as legal action, making a complaint against Iran to the International Court of the Justice in The Hague and to The United Nations. Thirdly, it intends to illuminate the policy of the British as the hidden agenda was to send some agents for spying inside Iran that it paved the way for further measures taken by the British, particularly to change Dr. Mosaddeq’s government. Qualitative approach has been applied to examine how the British policy has affected the history of Iran. The main resource used in this study is given to the documents from archival research and several magazines as well as books. The resultant study manifests that the British not only planned to control the oil cartel circumstances in the world and to boycott Iran’s oil via consultation with and through Americans but also they were the original source and effective factor in changing the domestic and foreign policies of Iran during 1953 coup. Keywords: Nationalization of oil;British;Dr. Mosaddeq;1953 coup;magazines;Iran