The battle for hearts and minds in the Middle East is being fought not on the streets of Baghdad, but on the newscasts and talk shows of Al Jazeera. The future of China is being shaped not by Communist Party bureaucrats, but by bloggers working quietly in cyber cafes. The next attacks by al Qaeda will emerge not from Osama bin Laden's cave, but from cells around the world connected by the Internet. In these and many other instances, traditional...