A US senator claimed this week that Aamer was not transferred to the UK with the full agreement of the US government and military. Meanwhile, British officials said the US case had been "discredited."
Eight years after he first vowed to close the detention facility at Guantanamo, Obama delivered a long-awaited plan Tuesday that offered little in the way of new ideas.
Military commanders reacted to an infamous detainee hunger strike and subsequent raid at Guantanamo with disdain and resentment, emails obtained by VICE News show.
In the Obama administration's largest-ever single transfer of prisoners from the Guantanamo detention facility, 10 men were sent to Oman late Wednesday.
The Obama administration calls itself the most transparent in history — yet remains extraordinarily secretive. Still, this year saw several victories in the fight for greater government transparency.
The last British detainee to be released from Guantanamo says British officers witnessed him being tortured by American interrogators and did nothing — but he doesn't want to take legal action.
Mustafa al-Aziz al-Shamiri was believed to be a high-level al Qaeda facilitator and trainer. But after years of being held at the military prison without charge, Pentagon officials recently said that he was in fact a low-level foot soldier.
The so-called child soldier accused of killing a US Army medic in Afghanistan spent more than a decade in US custody before being turned over to Canada in 2012.
The US president noted that operating Guantanamo is a huge waste of taxpayer dollars and is inconsistent "with our interests as a nation and undermines our standing in the world."
Attorneys for the Army sergeant charged with deserting his base in Afghanistan filed a motion to expedite a hearing to release documents in the case after the GOP frontrunner repeatedly called him a "dirty rotten traitor."
Likening lawmakers' fierce opposition to closing Guantanamo to calls against resettling Syrian refugees in the US, Obama emphasized on Thursday that the prison "has been an enormous recruitment tool" for terrorists like the Islamic State.