The Middle East is a geopolitical region encompassing the Arabian Peninsula, the Levant, Turkey, Egypt, Iran, and Iraq. The term came into widespread usage as a replacement of the term Near East beginning in the early 20th century. The term "Middle East" has led to some confusion over its changing definitions, and being seen as too Eurocentric. The region includes the vast majority of the territories included in the closely associated definition of West Asia, but without the South Caucasus, and additionally includes all of Egypt and all of Turkey.

The Arab world, formally the Arab homeland, also known as the Arab nation, the Arabsphere, or the Arab states, comprises a large group of countries, mainly located in Western Asia and Northern Africa. While the majority of people in the Arab world are ethnically Arab, there are also significant populations of other ethnic groups such as Berbers, Kurds, Somalis and Nubians, among other groups. Arabic is used as the lingua franca throughout the Arab world.