My book on Britain’s Quest for Oil: World War I during the WWI and at the subsequent peace conferences will soon be published by Helion. The link below is to a post I wrote for Helion’s blog about Mosul. Great Powers wanted to control it and its oil even then. WWI was not a war for oil. but it showed the vital need for secure supplies of oil. Mosul was the obvious place to obtain them as it was up for grabs after the collapse of the Ottoman Empire and there was little doubt that it contained large oil reserves, though they were not formally discovered until 1927.