Sayyid Ibrahim Husayn Qutb was an Egyptian Islamic scholar, revolutionary, poet, and a leading member of the Egyptian Muslim Brotherhood in the 1950s and 1960s. In 1966, he was convicted of plotting the assassination of Egyptian President Gamal Abdel Nasser and was executed by hanging. He is considered as "the Father of Salafi jihadism", the religio-political doctrine that underpins the ideological roots of global jihadist organisations such as al-Qaeda and ISIL.

The terms Muslim world and Islamic world commonly refer to the Islamic community, which is also known as the Ummah. This consists of all those who adhere to the religious beliefs, politics, and laws of Islam or to societies in which Islam is practiced. In a modern geopolitical sense, these terms refer to countries in which Islam is widespread, although there are no agreed criteria for inclusion. The term Muslim-majority countries is an alternative often used for the latter sense.