'Unity of Command' - 12 January Wall Street Journal commentary by Daniel Henninger.

Immediately after the president's speech, House Majority Leader Steny Hoyer said, "I heard nothing new."

Nothing? When Gen. David Petraeus takes command of U.S. forces in Iraq, it will mark the start of an historic turn in military strategy in Iraq and perhaps in U.S. war-fighting doctrine.

The U.S.'s primary problem in Iraq, manifest across 2006, has been an urban insurgency in a 30-mile radius around Baghdad and in Anbar province. The Petraeus command is the overdue beginning of the counterinsurgency. This isn't a one-off effort as at Fallujah, but counterinsurgency as daily U.S. military policy. It is the product of an enormous amount of self-criticism and analysis done by military and civilian analysts in and out of government. It does not mean, as often suggested the past 24 hours, that 20,000 U.S. troops are now going to run out and look for gun battles with insurgents in back alleys...