In the last decades, the South South Cooperation has intensifying substancially following the process of increase role of the emerging powers on the international scene after Cold War. This intensification has improve the debate in International Relations discipline about the role of this players with focus on the challenges of development and security agenda convergence. In this sense, this dissertation has main goal to analyse the South-South Cooperation between Brazil and Libya in the Lula and Dilma governments setting the time frame that begins in 2003 and extends until 2014. This period will be divided in two moments with fundamental inflection point in 2011when happened the Arab Spring and the subsequente NATO intervention in Libya as well as the transition between Lula and Dilma government. This moment is marked for Responsability to Protect (R2P) debates in International Relations discipline, a principle implemented for the first time in the Libya case, and the Brazilian critics following for the Responsability while Protecting (RwP) proposal. Therefore, emphasis will be placed on Brazilian foreign policy and the Brazil efforts to insertion on international scene as a regional power and emerging global power understending this movement under the development and security policies intersection perspective. This research is based on recently theorical framework of International Relations field called security-develoment nexus. This debate was motiveted for 9/11 events and the Terror War as well as to mobilize the discussion about security and development fields convertion. In this sense, it will be argued that there is a conflitive and increase dynamics in Brazilian foreign policies that alternates contestations of and insertion on international sistem. This dynamics permeates the relations between Brazil na Libya as well as the brazilian position about development and security agendas.