The Doctor Who episode broadcast tonight called World War III that is.
There were some particularly naughty political allegories in both episodes that had me giggling like a loon. For example the cliffhanger to Aliens of London had the Depty Prime Minister misusing ID cards to deadly effect. And this episode had some rather more obvious parallels to British premiers warning of threats from non-existant weapons of mass destruction.
So the moral of the tale is vote Lib Dem. As well you should.