This is obviously about Bush and the end of his regime. You can easily trace the neoconservative agenda behind his "missionaries on a foriegn field," and the fact that he was their "puppet on a string," the whole verse about the "wicked and wild wind" obviously refers to 9/11, the lies about wmds (and the justification for war and the patriot act) reflected in "never an honest word," There's not a country that doesn't want his "head on a plate," there are rumors his wife is leaving him, so he'll "sleep alone," etc. It's a brilliant song!