In the wake of the nuclear deal with Iran, there are new questions about the fate of four Americans who are being held captive by the Islamic republic.

Christian pastor Saeed Abedini, former Marine Amir Hekmati and Washington Post Iran Bureau Chief Jason Rezaian are known to be detained in Iran. The whereabouts of retired FBI Agent Robert Levinson are unknown, but he is also thought to be held captive in the country.

Jay Sekulow, chief counsel for the American Center for Law and Justice, said on "America's Newsroom" that the State Department has been AWOL when it comes to securing the freedom of these Americans.

"I blame President Obama squarely here," Sekulow said. "The idea that we have cut a nuclear deal with Iran ... and did not secure the release of four Americans is absurd, it is wrong, and look at the message it sends to the rest of the world: We leave our own behind."

Sekulow said this makes a bad deal even worse, as any American citizen held captive in a foreign country should always be a priority.

"The president of the United States has left on the battlefield four Americans. It's unacceptable."

Watch the "America's Newsroom" clip above.

You might also be interested in...

Graham: Iran Nuclear Deal 'Could Be a Death Sentence for the State of Israel'

Netanyahu Denounces Iran Nuclear Deal as 'Stunning Historic Mistake'

Obama: I Will Veto Any Legislation That Blocks Iran Nuke Deal

Walker to Hannity: 'I Would Terminate Bad Iran Deal on Day One'