The aftermath of the invasion of Iraq has been characterised by continued instability and insecurity. In the midst of all this certain questions have been recurrently asked.Why has Tony Blair, given such unwavering support to the US invasion of Iraq, againts the wishes of the UN, Britain's key European partners, and a majority of public opinion? What, in short, is the overwhelming British interest that an invasion was supposed to protect? This essay argues that the key to understanding Britain's persistent support of the US lies mainly in the notion of the "special relationship".