Time and again in our Nation's history, Americans have risen to meet -and to shape- moments of transition. This must be one of those moments. We live in a time of sweeping change. The success of free nations, open markets and social progress in recent decades have accelerated globalization on an unprecedented scale. This has opened the doors of opportunity around the globe, extended democracy to hundreds of millions of people and made peace possible among the major powers. Yet globalization has also intensified the dangers we face - from international terriorism and the spread of deadly technologies, to economic upheaveal and a changing climate.