The Joint Comprehensive Plan of Action, known commonly as the Iran nuclear deal or Iran deal, is an agreement on the Iranian nuclear program reached in Vienna on 14 July 2015 between Iran, the P5+1, and the European Union. The nuclear deal received a mixed international reaction, with many countries expressing praise or hope it could achieve the denuclearization of Iran. Some of Iran's neighbouring countries and U.S. lawmakers expressed skepticism about the agreement, seeing it as critically flawed.