This Journal editorial raises the issue of the need for full public disclosure of any and all side deals with the Iran nuclear deal of July 2014. It points out that Rep. Mike Pompeo of Kansas of the House Intelligence Committee, and Senator Tom Cotton of Arkansas came to know of side deals only when they were disclosed to them by the Deputy Director of the IAEA at a meeting in Vienna. This has assumed a different proportion of significance because of many unknowns in the agreement, particularly the one involving the military site at Parchin, which inspectors have not had access for 10 years and where Iran is reported to be conducting research on tests for anuclear weapon.