from the Soviet Union and Mexico. Led by Great Britain and France, and including the United States, most countries remained neutral and refused to provide armaments to either side. The powerful fear was that this localised conflict would escalate into a European conflagration that no one wanted. The Spanish Civil War was marked by numerous small battles and sieges, and many atrocities, until the Nationalists won in 1939 by overwhelming the Republican forces. The Soviet Union provided armaments but never enough to equip the heterogeneous government militias and the "International Brigades" of outside far-left volunteers. The civil war did not escalate into a larger conflict, but did become a worldwide ideological battleground that pitted all the Communists and many socialists and liberals against Catholics, conservatives and fascists. Worldwide there was a decline in pacifism and a growing sense that another world war was imminent, and that it would be worth fighting for. British Empire The changing world order that the war had brought about, in particular the growth of the United States and Japan as naval powers, and the rise of independence movements in India and Ireland, caused a major reassessment of British imperial policy. Forced to choose between alignment with the United States or Japan, Britain opted not to renew the Anglo-Japanese Alliance and instead signed the 1922 Washington Naval Treaty, in which Britain accepted naval parity with the United States. The issue of the empire's security was a serious concern in Britain, as it was vital to the British pride, its finance, and its trade-oriented economy. India strongly supported the Empire in the First World War. It expected a reward, but failed to get sovereignty as the British Raj kept control in British hands and feared another rebellion like that of 1857. The Government of India Act 1919 failed to satisfy demand for independence. Mounting tension, particularly in the Punjab region, culminated in the Amritsar Massacre in 1919. Indian nationalism surged and centred in the Congress Party led by Mohandas Gandhi. In Britain, public opinion was divided over the morality of the massacre between those who saw it as having saved India from anarchy and those who viewed it with revulsion. Egypt had been under de facto British control since the 1880s, despite its nominal ownership by the Ottoman Empire. In 1922, the Kingdom of Egypt was granted formal independence, though it continued to be a client state