Iranian Foreign Minister Javad Zarif, who is the chief representative of the Ayatollah’s interests abroad, has seemingly backed down from an offer made by Senator Tom Cotton (R-AK) to sit down and debate “Iran’s record of tyranny, treachery, and terror.”

The most recent feud between the Senator and Zarif came during the latter’s appearance at New York University Wednesday, where he took shots at Cotton’s position on the Iran nuclear talks.

“Whether Senator [Tom] Cotton likes it or not,” the U.S. has to comply with the lifting of sanctions following a nuclear agreement, demanded the Iranian Foreign Minister.

Cotton took to Twitter, and responded with the following series of tweets:

Zarif responded Thursday:

The Iranian foreign minister’s controversial visit to New York was “celebrated” by protesters, who held a mock party commemorating Iran’s 1000th hanging in the past 18 months.

The American-educated Zarif had previously visited New York’s Columbia University in 2006 as a member of the Ayatollah’s Islamic Republic. During the Q & A session, he exposed himself as a Holocaust revisionist by refusing to answer whether he believed 6 million Jews were killed in the WWII genocide.