Historians Michael Dumper and Bruce Stanley stated in 2007: 'For the purposes of this volume, the editors have generally chosen to define the MENA region as stretching from Morocco to Iran and from Turkey to the Horn of Africa. This definition thus includes the twenty-two countries of the Arab League (including the Palestinian Authority enclaves in the West Bank and Gaza Strip), Turkey, Israel, Iran, and Cyprus.' They stressed, however, how controversial and problematic this definition is, and that other choices could also have been made according to various criteria.