By JON GAMBRELL, LUJAIN JO and MATTHEW LEE
DOHA, Qatar (AP) -- Five Americans detained for years in Iran walked off a plane and into freedom Monday, many arm-in-arm, as part of a deal that saw President Joe Biden agree to unlock nearly $6 billion in frozen Iranian assets. The deal brought Biden profuse thanks from their families but heat from Republican opponents for the monetary arrangement with one of America's top rivals.
"Today, five innocent Americans who were imprisoned in Iran are finally coming home," Biden said in a statement released as the plane carrying the group from Tehran landed in Doha, Qatar. A plane carrying the Americans home to the United States was due to land Monday night.
Iran's hard-line President Ebrahim Raisi, on hand for the United Nations General Assembly in New York, suggested that Monday's exchange could be "a step in the direction of a humanitarian action between us and America."
"It can definitely help in building trust," Raisi told journalists.
Despite the successful negotiations Monday, however, tensions are almost certain to remain high between the U.S. and Iran, which are locked in disputes over Tehran's nuclear program and other matters. Iran says the program is peaceful, but it now enriches uranium closer than ever to weapons-grade levels.
The carefully negotiated and timed prisoner exchange unfolded amid a major American military buildup in the Persian Gulf, with the possibility of U.S. troops boarding and guarding commercial ships in the Strait of Hormuz, through which 20% of all oil shipments pass.
After the plane slowed to a stop in Doha, three of the prisoners walked down the stairs. They hugged the U.S. ambassador to Qatar, Timmy Davis, and others.
The three -- Siamak Namazi, Emad Sharghi and Morad Tahbaz -- then threw their arms over one another's shoulders and walked off to a building in the airport.
In a statement issued on his behalf, Namazi said: "I would not be free today, if it wasn't for all of you who didn't allow the world to forget me."
"Thank you for being my voice when I could not speak for myself and for making sure I was heard when I mustered the strength to scream from behind the impenetrable walls of Evin Prison," Namazi said.
The United States did not immediately identify the other two of the five freed American citizens, all of whom were freed in exchange for five Iranians in U.S. custody and for the deal over the frozen Iranian assets. The Biden administration said the five freed Iranians posed no threat to U.S. national security.
In addition to the five prisoners, two female family members of the imprisoned Americans who had themselves been held under travel bans in Iran flew out of Tehran. The women, too, clasped arms and kissed.
Earlier, Iranian Foreign Ministry spokesman Nasser Kanaani said the exchange would take place Monday after nearly $6 billion in once-frozen Iranian assets reached Qatar.
"Fortunately Iran's frozen assets in South Korea were released and God willing today the assets will start to be fully controlled by the government and the nation," Kanaani said.
He said two of the Iranian prisoners will stay in the U.S. Meanwhile, Nour News, a website believed to be close to Iran's security apparatus, said two of the Iranian prisoners had arrived in Doha for the swap.
The cash represents money South Korea owed Iran -- but had not yet paid -- for oil purchased before the U.S. imposed sanctions on such transactions in 2019.
The U.S. maintains that, once in Qatar, the money will be held in restricted accounts to be used only for humanitarian goods, such as medicine and food. Those transactions are currently allowed under American sanctions targeting the Islamic Republic over its advancing nuclear program.
Iranian government officials have largely concurred with that explanation, though some hard-liners have insisted, without providing evidence, that there would be no restrictions on how Tehran spends the money.
Mohammad Reza Farzin, Iran's Central Bank chief, later came on state television to acknowledge the receipt of over 5.5 billion euros -- $5.9 billion -- in accounts in Qatar. Months ago, Iran had anticipated getting as much as $7 billion.
The planned exchange comes ahead of the convening of world leaders at the U.N. General Assembly this week in New York, where Iran's hard-line President Ebrahim Raisi will speak.
The deal has already opened Biden to fresh criticism from Republicans and others who say the administration is helping boost the Iranian economy at a time when Iran poses a growing threat to American troops and Mideast allies. That could have implications in his reelection campaign as well.
In his statement, Biden urged Americans not to travel to Iran, and he demanded more information on what happened to Bob Levinson, an American who went missing years ago. Biden also announced sanctions on former Iranian President Mahmoud Ahmadinejad and the Iranian Ministry of Intelligence.
The prisoners freed Monday were: Namazi, who was detained in 2015 and was later sentenced to 10 years in prison on spying charges; Emad Sharghi, a venture capitalist sentenced to 10 years; and Morad Tahbaz, a British-American conservationist of Iranian descent who was arrested in 2018 and also received a 10-year sentence.
Iran and the U.S. have a history of prisoner swaps dating back to the 1979 U.S. Embassy takeover and hostage crisis following the Islamic Revolution. Their most recent major exchange happened in 2016, when Iran came to a deal with world powers to restrict its nuclear program in return for easing sanctions.
Negotiations over a major prisoner swap faltered after then-President Donald Trump unilaterally withdrew America from the nuclear deal in 2018. From the following year on, a series of attacks and ship seizures attributed to Iran have raised tensions.