TY - BOOK AU - CROCKER Chester A AU - HAMPSON Fen Osler AU - AALL Pamela TI - A global security vacuum half-filled: regional organizations, hybrid groups and security management PY - 2014/// KW - PEACE OPERATIONS KW - INTERVENTION N2 - Discusses the legitimacy, effectiveness and precedent setting potential of collective conflict management initiatives, which in some areas and disputes are filling the void left as "the United Nations and key powers are pulling back from robust engagement in conflict management". Concludes that regional organizations can play an increasingly important role, ad hoc groups can be more flexible, but neither is a substitute for UN based actions UR - http://dx.doi.org/10.1080/13533312.2014.895603 ER -