On the contrary, Ferguson maintained that Germany waged a preventive war in 1914, a war largely forced on the Germans by reckless and irresponsible British diplomacy. In particular, Ferguson accused the British Foreign Secretary Sir Edward Grey of maintaining an ambiguous attitude to the question of whether Britain would enter the war or not, and thus confusing Berlin over just what was the British attitude towards the question of intervention in the war. Ferguson accused London of unnecessarily allowing a regional war in Europe to escalate into a world war. Moreover, Ferguson denied that the origins of National Socialism could be traced back to Imperial Germany; instead Ferguson asserted the origins of Nazism could only be traced back to the First World War and its aftermath.