The world we live in today is defined by rapid and constant change. Advances in communication, transportation, and trade have intensified global transnational exchange, and join all nations in the Western Hemisphere and the world with fates more tightly interlocked than ever. While some modern technologies have greatly benefitted the people of most every nation, other changes have been more problematic and present us with unprecedented challenges in the 21st Century. In such an environment security and stability must rely on concerted action and cooperation between nations across the hemisphere, and throughout the world.