Abstract: on Saturday 28th of Isfand 1389, multilateral military operation started in response to internal war and based on UNSC resolution 1973, with partnership of NATO. This operation was in the framework of no fly zone region, and support for non-military people and regions in Libya and at the end led to collapse of Gadhafi regime. Operation of odyssey dawn and global response to events in Libya turned a new season in humanitarian intervention. This article after a historical review of humanitarian intervention and principal of responsibility for support, analyses events of military operation in Libya under the principal of responsibility for support. This operation was the first humanitarian intervention of global community under the principal of responsibility for support.
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