J.A. Hobson 
Towards International Government (Routledge Revivals) [PDF ebook] 

First published in 1915, Towards International Government considers the consequences of war for global diplomacy and the alliance system. Hobson argues that, to reduce armaments and the possibility of another world war, an organisational structure of international government must be put into place. An extension of the League of Nations, Hobson proposes that this council would need to hold legislative powers enabling it to impose economic sanctions and, if necessary, the ability to deploy an international force. This is a fascinating and exceptionally forward-thinking work, of great importance to economic and political historians of the twentieth century.