Secretary of State Cyrus Vance. Vance initially tended his resignation days before the Operation took place, but it became official on April 28th as rumors of the resignation were rife throughout Washington.

Cyrus Vance: “As you know, I could not support the difficult decision taken by the President on the rescue operation in Iran. I therefore submitted my resignation to the President last week. I have told the President that I continue to support fully his policies on other Foreign Policy issues. I’ve assured him that he can count on my support for his continued leadership of our nation. He will always have my deepest respect and affection.”

Vance was immediately replaced by Warren Christopher then Edmund Muskie and the stalemate continued.

This clip is from NPR's All Things Considered from April 28, 1980. In addition to the resignation and the continuing fallout from the rescue attempt, there is also a bit of news on the upcoming 1980 election as well as news of the swarm of Cuban refugees landing in Miami. Interesting day all around, in case you missed it.