Domestic political dynamics have been playing critical role since 1979 in shaping Iran's foreign and security policy. The Revolution of 1979 erupted due to Shah's despotic domestic policies and his heavy dependence on the West and the United States. The expression of domestic circumstances on Iran's foreign and security policy came in 1979 that continued and still persists. Domestic political influence over Iran's foreign and security policy and vice-versa has been continuing since 1979 as demonstrate from the country's behaviour. President Rouhani's policies reflect that the complex relationship between domestic politics and foreign-security policy established in the yearly period of the Revolution which continued. The book exposes domestic circumstances and political dynamics and their impact on Iran's foreign and security policy.