#18 Caveats Endanger & Caveats Kill: National Caveats in UN Operations in Angola, Rwanda & Bosnia-Herzegovina – Dr Regeena Kingsley The last blog discussed the key choice facing all Multinational Operations (MNOs) operators of having either standardised or disparate Rules of Engagement (ROE) between national contingents operating within the mission (see blog “#17 The Complexity of Diverse National ROE within Multinational Security Operations”). It outlined, firstly, the various difficulties posed to attempts by security organisations to standardise ROE among the States contributing armed forces to an MNO, and secondly, the impact of diverse sets of national ROE on