By 1916 the entry of the United States into the First World War was considered a vital step in securing an Allied victory against Germany. However, for the first two years of the war diplomacy between Britain and America had been marked by uncertainty. Woodrow Wilson had publicly declared America’s policy of neutrality shortly after the outbreak of hostilities between the European powers. In early 1915 Wilson explained America’s policy, ‘The basis of neutrality, gentlemen, is not indifference; it is not self-interest. The basis of neutrality is sympathy for mankind. It is fairness, it is good will at bottom. It is impartiality of spirit and of judgement.’ American public opinion from 1914-1916 also strongly favoured neutrality. Britain’s diplomatic efforts were therefore focused on finding a way to break this impasse and convince a reluctant United States help end the deadlock on the Western Front.