The 'war to end all war' had not achieved its aim.Īt the beginning of November 1914, the Ottoman Empire, the world's greatest independent Islamic power, abandoned its ambivalent neutrality towards the warring parties, and became a belligerent in the conflict, with the sultan declaring a military jihad (holy war) against France, Russia and Great Britain. After four centuries of continuous rule, the Ottoman Empire collapsed, creating a vacuum that contributed to tensions between local inhabitants and external powers or interests. The Middle East was no less affected by the conflict.