A horse, a cow and a donkey

A horse, a cow and a donkey were having an argument about who had most contributed to the war effort. The horse said he had done the most - ‘Without me, the soldiers wouldn't have been able to ride off to war’.
The cow said she was the one - ‘Without me, there would have been no one to feed the civilian population’.
The donkey, not to be outdone, said, ‘True....but I was the head of government. Without me, there would have been no war!’

Got this from Sms blog.