Hardly any one agrees with him — including his Secretary of Defense James Mattis, who told the Senate on Tuesday that the accord is in the national security interest. The entire national security team is with Mattis. At the same hearing, Chairman of the Joints Chiefs Gen. Joseph Dunford said the Iran is complying with the agreement, echoing the unanimous conclusion of our intelligence agencies and repeated reports from the International Atomic Energy Agency that Iran is following all the limits the deal imposed.