As we defend the peace, we will also take advantage of an historic opportunity to preserve the peace. Today, the international community has the best chance since the rise of the nation-state in the seventeenth century to build a world where great powers compete in peace instead of continually prepare for war. Today, the world's great powers find ourselves on the same side -- united by common dangers of terrorist violence and chaos. The United States will build on these common interests to promote global security. We are also increasingly united by common values. Russia is in the midst of a hopeful transition, reaching for its democratic future and a partner in the war on terror. Chinese leaders are discovering that economic freedom is the only source of national wealth. In time, they will find that social and political freedom is the only source of national greatness. America will encourage the advancement of democracy and economic openness in both nations, because these are the best foundations for domestic stability and international order. We will strongly resist aggression from other great powers -- even as we welcome their peaceful pursuit of prosperity, trade, and cultural advancement.