"Revolution" reveals that even as government worried about how to contain unrest on their own side, they also set agents working to exploit discontent and foment revolution among the enemy. Britain sponsored the Arab Revolt through Lawrence of Arabia, Germany backed Irish independence with arms for the Easter Rising and funded Lenin's Russian coup d'état in 1917. Revolution became a weapon of war, a way to hit the enemy from within. When Lenin pulled Russia out of the war, it vindicated all Germany's efforts to use subversion. Now half a million German soldiers were released for the Western Front.