This Policy on Youth in Development is the first of its kind for USAID. It is both timely and necessary as more than half of the world’s population today is under the age of 30, with the vast majority living in the developing world.As Secretary Clinton said in Tunisia in February 2012,“…in every region, responding to the needs and aspirations of young people is a crucial challenge for the future." The policy is predicated on emerging best and promising practice for youth development and engagement that are gleaned from USAID and partner’s experience in youth programming, as well as through consultations with young people across the developing world.The policy is further informed by principles and practices articulated in the Presidential Policy Directive on Global Development (PPD), the Quadrennial Diplomacy and Development Review (QDDR), the National Security Strategy 2010, State Department Youth Policy 2011, USAID Forward, and the USAID Policy Framework 20112015.