The document summarizes an upcoming UN General Assembly side event on shaping international development cooperation for effective implementation of the Post-2015 development framework. The event will bring together government ministers and leaders from multilateral organizations to discuss lessons learned from multi-stakeholder partnerships in advancing development objectives. In particular, participants will explore how principles of effective cooperation like country ownership, results focus, inclusiveness, and transparency have strengthened partnerships and leveraged resources for development. The goal is to demonstrate how the Global Partnership for Effective Development Cooperation can help accelerate achieving the new post-2015 goals through more effective cooperation.