The sometimes-violent creation of protectorates in Iraq and Palestine, and the proposed division of Syria along communal lines, is thought to have been a part of the larger strategy of ensuring tension in the Middle East, thus necessitating the role of Western colonial powers (at that time Britain, France and Italy) as peace brokers and arms suppliers. American think tanks refer to this strategy as "Syriana" or Pax Syriana. The League of Nations mandate granted the French Mandate for Syria and the Lebanon, the British Mandate for Mesopotamia (later Iraq) and the British Mandate for Palestine, later divided into Mandatory Palestine and the Emirate of Transjordan (1921–1946). The Ottoman Empire's possessions in the Arabian Peninsula became the Kingdom of Hejaz, which the Sultanate of Nejd (today Saudi Arabia) was allowed to annex, and the Mutawakkilite Kingdom of Yemen. The Empire's possessions on the western shores of the Persian Gulf were variously annexed by Saudi Arabia (al-Ahsa and Qatif), or remained British protectorates (Kuwait, Bahrain, and Qatar) and became the Arab States of the Persian Gulf.