MercoPress. South Atlantic News Agency

Fifteen Guantanamo prisoners transferred to the United Arab Emirates

President Obama has long vowed to close Guantanamo, but efforts to transfer prisoners to the U.S. have been blocked by Congress.

Fifteen prisoners at Guantanamo Bay have been transferred to the United Arab Emirates — the largest single release of the Obama administration. The population of the military prison in Cuba is now down to 61.

 President Obama has long vowed to close Guantanamo, but efforts to transfer prisoners to the U.S. have been blocked by Congress. As a result, any release must be coordinated with another country. That poses a particular challenge for detainees from places like Yemen, where the U.S. wont repatriate prisoners because of security concerns, as a third country must be found that is willing to resettle them.

Twelve of the prisoners released on Monday were from Yemen; the other three were from Afghanistan.

The UAE has accepted released prisoners twice before — one UAE citizen repatriated in 2008 and five Yemenis resettled last year. The Yemenis previously sent to the UAE are believed to have been placed in a government-run rehabilitation and monitoring program, although details are unclear.

With the new transfer, the UAE has taken in a total of 20 prisoners for resettlement. Oman has also resettled 20; no other country has accepted so many nonnative Guantanamo detainees.

Six of the newly released prisoners had been approved for transfer for more than six years — the Guantanamo Review Task Force, which reviewed cases starting in 2009, had unanimously approved them, the Department of Defense said in a press release.

The other 12 prisoners, including all three Afghans, were cleared for release by the Period Review Board between January 2014 and May of this year.

The New York Times reports that with these 15 prisoners sent for resettlement in the UAE, there are now only 20 Guantanamo prisoners who have been approved for transfer and are simply waiting for a country to agree to take them.

“While it appears increasingly unlikely that President Obama will succeed in closing the prison before he leaves office in January,” the Times writes, he's “significantly closer” to releasing all the men on that shorter list of detainees.

Amnesty International welcomed Monday's transfer and described Guantanamo as an “ugly stain” on the U.S. human rights record.