The Niedermayer–Hentig Expedition, also known as the Kabul Mission, was a diplomatic mission to Afghanistan sent by the Central Powers in 1915–1916. The purpose was to encourage Afghanistan to declare full independence from the British Empire, enter World War I on the side of the Central Powers, and attack British India. The expedition was part of the Hindu–German Conspiracy, a series of Indo-German efforts to provoke a nationalist revolution in India. Nominally headed by the exiled Indian prince Raja Mahendra Pratap, the expedition was a joint operation of Germany and Turkey and was led by the German Army officers Oskar Niedermayer and Werner Otto von Hentig. Other participants included members of an Indian nationalist organisation called the Berlin Committee, including Maulavi Barkatullah and Chempakaraman Pillai, while the Turks were represented by Kazim Bey, a close confidante of Enver Pasha. Britain saw the expedition as a serious threat. Britain and its ally, the Russian Empire, unsuccessfully attempted to intercept it in Persia during the summer of 1915. Britain waged a covert intelligence and diplomatic offensive, including personal interventions by the Viceroy Lord Hardinge and King George V, to maintain Afghan neutrality. The mission failed in its main task of rallying Afghanistan, under Emir Habibullah Khan, to the German and Turkish war effort, but it influenced other major events. In Afghanistan, the expedition triggered reforms and drove political turmoil that culminated in the assassination of the Emir in 1919, which in turn precipitated the Third Anglo-Afghan War. It influenced the Kalmyk Project of nascent Bolshevik Russia to propagate socialist revolution in Asia, with one goal being the overthrow of the British Raj. Other consequences included the formation of the Rowlatt Committee to investigate sedition in India as influenced by Germany and Bolshevism, and changes in the Raj's approach to the Indian independence movement immediately after World War I. Background In August 1914, World War I began when alliance obligations arising from the war between Serbia and Austria-Hungary brought Germany and Russia to war, while Germany's invasion of Belgium directly triggered Britain's entry. After a series of military events and political intrigues, Russia declared war on Turkey in November. Turkey then joined the Central Powers in fighting the Entente Powers. In response to the war with Russia and Britain, and further motivated by its alliance with Turkey, Germany accelerated its plans to weaken its enemies by targeting their colonial empires, including Russia in