TONY BLAIR: Tony Blair is Labour's most electorally successful leader and brought about a long-term shift in British politics. But the decision to invade Iraq will dominate his place in the history books. On 18 March 2003, Blair delivered a typically brilliant speech to the Commons to make the case for invading Iraq. He told MPs it was "palpably absurd" to believe Saddam Hussein had destroyed unaccounted-for anthrax, chemical munitions, sarin, botulinum toxin and a VX nerve agent programme. Blair staked his reputation on the war, despite being branded "Bliar" by anti-war campaigners. He has always defended the decision to invade and insisted it was right to remove Saddam. But the military campaign and its aftermath dominated his second term and hastened his political demise after his third election victory. Blair stood down last June and is now an official peace envoy to the Middle East. He has accepted posts with JP Morgan and the insurance company Zurich.