Abu Musab al-Zarqawi, born Ahmad Fadeel al-Nazal al-Khalayleh, was a Jordanian jihadist who ran a terrorist training camp in Afghanistan. He became known after going to Iraq and being responsible for a series of bombings, beheadings, and attacks during the Iraq War, reportedly "turning an insurgency against US troops" in Iraq "into a Shia–Sunni civil war". He was sometimes known by his supporters as the "Sheikh of the slaughterers".

The 2005 Amman bombings were a series of coordinated suicide bomb attacks on three hotel lobbies in Amman, Jordan, on 9 November 2005. The explosions at the Grand Hyatt Hotel, the Radisson SAS Hotel, and the Days Inn started at around 20:50 local time at the Grand Hyatt. The three hotels are frequented by foreign diplomats. The bomb at the Radisson SAS exploded in the Philadelphia Ballroom, where a Palestinian wedding hosting hundreds of guests was taking place. The attacks killed 57 people and injured 115 others.