Television personality Montel Williams, a veterans advocate and former Navy officer, appears before a House Foreign Affairs subcommittee on Capitol Hill in Washington on Oct. 1, 2014. (J. Scott Applewhite/Associated Press)

News that Iran freed Washington Post journalist Jason Rezaian and three other Iranian Americans as part of a prisoner swap on Saturday was greeted with cheers by many Americans. But some Republican presidential candidates and other critics of President Obama have found fault with it, prompting a message from Navy veteran and television personality Montel Williams: “Sit the hell down and shut up.”

Williams has advocated regularly for another one of the American prisoners released, Amir Hekmati, 32, a Marine Corps veteran who was taken prisoner in Iran while visiting the country in 2011. Iranian officials accused him of being a spy, but his family has maintained that he was there visiting his grandmother.

A series of tweets from Williams made it clear he thinks politics should wait:

Among the critics of the prisoner swap Saturday were presidential candidate and former Gov. Chris Christie (R.-N.J.), who said he wanted to hear more about the deal.

“We shouldn’t have to swap prisoners,” he said. “These folks were taken illegally in violation of international law and they should have been released without condition.”

Sen. Marco Rubio (R-Fla.) told reporters in Iowa that the deal “tells us everything we need to know” about the Iranian regime.

“That they take people hostage in order to gain concessions,” he said. “And the fact that they can get away with it with this administration, I think, has created an incentive for more governments to do this around the world.”

Washington Post journalist Jason Rezaian has been freed after 544 days in Iranian prison. He was arrested in Iran in 2014 and convicted of espionage last year. Here's what you need to know about the case against him. (Monica Akhtar/The Washington Post)