Ibrahim Sulayman Muhammad Arbaysh

Ibrahim Sulayman Muhammad al-Rubaish (July 7, 1979 – April 12, 2015) was a terrorist and a senior leader of Al Qaida in the Arabian Peninsula (AQAP), who was held in extrajudicial detention in the United States's Guantanamo Bay detention camp in Cuba. He was released into the custody of Saudi Arabian authorities and then escaped in 2006. He became AQAP's mufti (expounder of Islamic law).

Al-Rubaish was captured near the Pakistan-Afghan border and transferred to Saudi Arabia on December 13, 2006.

On February 3, 2009 Saudi security officials published a new list of Saudi suspected terrorists. Al-Rubaish was one of 11 of the 85 men on this list who was a former Guantanamo captive.

In November 2009 a research paper from the think tank The Jamestown Foundation asserted that Al-Rubaish was now a mufti for Al Qaida in the Arabian Peninsula (AQAP).

The paper's author Murad Batal Al-Shishani asserted that Al-Rubaish had produced an audio tape Al-Qaida had released in September attempting to justify a recent attempt to assassinate a senior member of the Saudi Royal Family. The paper asserted Al-Rubaish had published a book criticizing Shaykh Salman al-Ouda, a critic of al Qaida's attacks on September 11, 2001. It also claimed that he had released an additional audio tape in November 2009, criticizing the Saudi government's introduction of mixed sex education for children.

ISN 192 -- Ibrahim Sulayman Muhammad Arbaysh's Guantanamo detainee assessment.

Al-Rubaish was transferred to Saudi Arabia on December 13, 2006, then escaped from custody and joined AQAP in Yemen, becoming a senior figure in the group.

In early 2013 Al-Rubaish called for jihad against Americans, saying "It is my duty to spur the Muslims to kill the Americans, to get them out of the Muslims' land", also expressing hope that Sunnis would unite in a war against Shiite Iran.

In October 2014, the U.S. State Department's Rewards for Justice program opened a US$5 million reward for Al-Rubaish's location. In December 2014, he was designated a Specially Designated Global Terrorist.

AQAP released a statement in April 2015 announcing that al-Rubaish had been killed with other unnamed individuals in a drone strike near Mukalla on 12 April 2015. It is believed that the drone strike was carried out by the United States.