Mubarak Al-Sabah included other pressures and troubles for the Ottoman Empire including the British lobbying on Kuwait's behalf, led to the Anglo-Ottoman Convention of 1913, which recognized Kuwait as an autonomous "kaza" of the Ottoman Empire within the Green zone outlined in the map as well as an independent entity within the red zone outlined in the map. By the time World War I began Mubarak closely sided with the British against the Ottomans, and the 1913 Convention was rendered null. In support of the war effort Mubarak sent a force to Umm Qasr, Safwan, Bubiyan, and Basra to expel the Ottomans
History of the foreign relations of the United Kingdom typified a moral status as a nurse that was superior to aristocratic militarism in terms of both morality and efficiency. Historian R. B. McCallum points out the war was enthusiastically supported by the British populace as it was happening, but the mood changed very dramatically afterwards. Pacifists and critics were unpopular but: The most decisive event emerged from the Anglo-Egyptian War, which resulted in the occupation of Egypt. although the Ottoman Empire was the nominal owner, in practice Britain made all the decisions. In 1914, Britain went to war with the Ottomans and ended their nominal role. Historian A. J.