Force As Slot Machine -How much political utility does use of force have?

Force As Slot Machine - The Daily Dish | By Andrew Sullivan: "From Andrew Bacevich's article in The American Conservative:"

An alternative reading of our recent military past might suggest the following: first, that the political utility of force—the range of political problems where force possesses real relevance—is actually quite narrow; second, that definitive victory of the sort that yields a formal surrender ceremony at Appomattox or on the deck of an American warship tends to be a rarity; third, that ambiguous outcomes are much more probable, with those achieved at a cost far greater than even the most conscientious war planner is likely to anticipate; and fourth, that the prudent statesman therefore turns to force only as a last resort and only when the most vital national interests are at stake. Contra Kristol, force is an “instrument” in the same sense that a slot machine or a roulette wheel qualifies as an instrument.