This research aimed to describe the changing of United States policy era President Barrack Hussein Obama. This research aims to look at the option policy of the President Barrack Obama towards Iran nuclear deal agreement with P5+1 (Russia, America, France ,England, China plus Germany) to stop Iran from its nuclear enrichment. It has 3 policy option, agree with Iran nuclear agreement under JPOA with P5+1, Reject the agreement and lifted the sanction towards Iran, Or using military attack that each option has different risk and benefits. To minimize the risk, President Barrack Obama choose to do Iran nuclear deal agreement under the JCPOA with P5+1 to prevent Iran from having nuclear technology. This method of research uses descriptive and the data that uses in this research is a sekunder data that come from books, internet, and other resoursec that related with this research that can uses to increase this research.