The intent for this thesis is to explain and inform the process of the Iranian Nuclear Program throughout the last decades. The stand of the Islamic Republic of Iran has brought very delicate issues and confrontations to the international community. This thesis discusses the history of key countries that play an important part into developing the Iranian nuclear program. These countries being the United States, Israel, Russia and other countries part of the UN Security Council. This thesis also attempts to analyze and focuses on the domestic policies the government of Iran and its people have interacted with the nuclear deal. The nuclear deal between the UN Security Council members and the Islamic Republic of Iran have shown an array of acceptance and rejection within, specially, the United States, Arab countries in the region and Israel. The implementations of the solution to future confrontation are probably the main ideal to a healthy international community who can adapt to new measures and policies to a safer world. Using classical realist theory, based on Hans J. Morgenthau realist theory, the Iranian nuclear program could be explained with a different perspective. There are other international relations theories that could help explaining Iran’s government behavior and how it interacts with the international community. Iran’s move in the past years has shown progress towards the international community and has lowered the potential military action against Iran. Some countries like Israel continue on the dissatisfaction against the nuclear deal signed by Iran and the UN Security Council member countries. This thesis will show the behavior the country of Iran has had towards other countries based on their domestic policy.