The war waged against terror since September 11 puts a strain on democracy itself, because it is mostly waged in secret, using means that are at the edge of both law and morality. Yet democracies have shown themselves capable of keeping the secret exercise of power under control.
The wars of the future will be fought by computer technicians and by lawyers and high-altitude specialists, and that may mean war will be increasingly abstract, hard to think about and hard to control.
When we say, even in a global village, that all politics is local, we mean that national sovereignties are the only reliable source of political authority.