Pfizer was the last remaining source of lethal injection drugs for US states, as more than 25 other global pharmaceutical companies, including ones in the US, have taken similar steps.
Virginia lawmakers have approved switching to the electric chair amid a shortage of lethal injection drugs, but Governor Terry McAuliffe could veto the legislation.
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."
Aamer, long acknowledged to be a leader of detainees at the detention facility, was never charged with a crime during the 13 years he spent as a captive of the US government.
The Pakistani government is coming under fire over the scheduled executions of two inmates next week, including one who is permanently disabled.
The inmate, who contributed to a series of VICE stories about the detention center, has been cleared for release since 2007 but will now—at last—get to return to his family.
Lawyers for Chekkouri say they don't know where he is, and have no been able to speak with or see their client since he arrived on Moroccan soil.
It's now more than a year since British citizen Andy Tsege was abducted in Yemen and locked up in a secret Ethiopian jail. His family says the UK government is not doing nearly enough to help.
Critics said the strike that killed a UK citizen in Syria blurred the lines on what Britain was prepared to use such tactics for, but the government said that further fatal strikes are possible.
The UK's parliament voted against any military action in Syria two years ago, but the country's defense ministry today admitted that embedded British personnel are carrying out airstrikes there.
Shafqat Hussain is thought to have been 14 when he was sentenced to death in an anti-terror court, though he later claimed to have been tortured into a confession.
The case, being brought by relatives of men that died in an August 2012 strike in Yemen, rests on the claim that a German air base plays a central role in the US covert drone program.