Complete story — includes the ending
After Iran turns away the inspectors, Elizabeth scrambles to get the votes of the permanent members of the UN Security Council to reestablish the sanctions on Iran. From the Iranians being held by Russia, they learn that it was a dissenting member of the Iranian government who was trying to reestablish Iran's nuclear program. The Iranian ambassador tells Elizabeth that they will allow the inspectors in if Sam Evans takes back his claim that he intends to destroy the peace deal as soon as he takes office. Elizabeth is able to get Sam to admit that he does not really plan to do that while he is unknowingly on an open microphone. With the peace deal back in place, Russia releases the Iranians, but their plane is shot down by an unknown militant group. Elizabeth and Conrad suspect Israel. Russell collapses in his office.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Madam Secretary season 3. HTML formatting and reference markers removed. · Content license