Former US President Barack Obama said today that his India visit was part of his single-biggest post-Presidency mission: to help form the next generation of leadership, not only in the US but across the world. At a town hall organised by the Obama Foundation where he addressed nearly 300 young men and women from across India, he said, "The single most important thing I want to focus on is the next generation of leadership. That's the central goal of the foundation," he said.