For purposes of combat actions such as the targeted killing of Awlaki, the battleground in our war against al-Qaeda is not “everywhere.” It is in those few countries that either willingly or unwillingly provide significant safe havens for al-Qaeda. Yemen is in the first rank of that group of countries, along with Pakistan, Afghanistan, and Somalia.
All I can say is: Germany, we're coming for you. London, you might see some Predator drones in your skies. Toronto, get ready for some Hellfire missiles.