Iran is the largest state supporter of terrorism. Iran has vowed to wipe Israel off the face of the map. This deal removed all sanctions, which took their crippled economy and made it healthy and robust. This deal did not give us any real means of inspecting their facilities in order to ensure compliance. The net result was that we got nothing out of this deal, and Iran receive $150 billion and a healthy economy due to the lifting of all sanctions. A healthy economy gave the largest state supporter of terrorism the means to more effectively create chaos throughout the middle east, and it gave them more capital to invest in long range missile systems etc. Pulling out of this deal served our interests because it financially hampers Iran's ability to create chaos and to fund its missile program. Pulling out of this deal dropped the facade that Iran was a nation in good standing with the world body.