If there's one issue that will get people in the UK talking it's the Iraq War, so it's no wonder that the BBC has decided to make a three-part documentary series about the ongoing conflict. They've gathered together a collection of senior figures, who had a hand in the key decision-making every step of the way: Colin Powell, Tony Blair, Jack Straw, General Petraeus and Dominique de Villepin are among those who will be to explaining the logic behind their choices. Tonight we head back to January 2002, when the war on terror was just four months old.