The Yale International Relations Leadership Institute, or YiRLI, is a one-week long residential summer program for high school students about leadership, international relations, and Model United Nations run by Yale students from the Yale International Relations Association. Through YIRLI, program participants will learn more about the world, themselves, YIRA (Yale International Relations Association), and the amazing resources Yale has to offer. It was formerly known as YMUNI, the Yale Model United Nations Institute.