Wizbang today has this post on changing Iraq strategy. I think it well worth reading. A portion below, read the whole thing.

As I understand it, there are three levels of planning in the military: objectives, strategies, and tactics. Objectives describe what we wish to do. Strategies describe how we will do that. And tactics are what we will do.

In Iraq, as I think it goes, the objective was to remove the Baathist government from power, help the Iraqi people establish a new, freer government, and work to make sure that new government was not the threat to its neighbors and vital US interests that Saddam had been.

The strategy was to invade Iraq, defeat and disband the military, and then establish a new civil and military structure that could maintain its own security without threatening others'.

The tactics involve careful use of airpower and ground power against select locales, groups, and individuals; establishment of civilian institutions and governing bodies; national elections; and rebuilding of key elements of Iraq's infrastructure.

There is an old saying that no plan ever survives first contact with the enemy, and it is true. It is true in a way that almost never translates into non-military matters, because only in actual warfare is there a real enemy determined to foil your plans, to the point of being more than willing to destroy, kill, or die in the attempt.