This article conducts a normative evaluation of Operation Iraqi Freedom undertaken in 2003 by employing principles of prudence to enquire whether the use of force could be described as an action by a responsible great power. Along with relating the principles of prudence to the concept of great power responsibility, it highlights two pillars of prudent decision-making: circumspection and awareness of one's limits. This normative framework is then utilised to evaluate the invasion of Iraq from the perspective of these specific (...) aspects of prudence. The conclusion shows that on the basis of this normative yardstick, it is not possible to classify Operation Iraqi Freedom as a prudent action by a responsible great power. (shrink)