The rise and entry into force of the 2008 Convention on Cluster Munitions (CCM) that prohibits cluster bombs constitutes a global prohibition regime. I argue that this new prohibition regime and the arising new international norm set by the CCM, i.e. the prohibition of the use, development, production, acquisition, stockpiling, retention or transfer of cluster munitions developed due to a strong moral opprobrium, initially elicited by commanding moral force of International Humanitarian Law as a robust and compelling previously existing normative structure and then by the success of the ban on landmines that acted as a model of activism and fast-track diplomacy a decade before. The ban on cluster bombs is about military doctrines succumbing to the higher authority of moral and humanitarian concerns propelled by activist non-governmental actors and a few forward-looking states.