I enjoyed Ezra Klein's column about how we fund our wars in the U.S., and commend it to your attention.
There is a lot of good sensible talk here about being honest with ourselves: Putting war costs in the budget, rather than under "emergency funding" where they aren't really examined; and thinking ahead to provide estimates of cost for different scenarios, not just the one where we achieve our goal immediately and come home in a week (believe it or not, that rarely happens).
This all made me think, though, about another issue that seems constantly to elude our understanding. As Klein says at the outset, war costs money. Lots of it. It's something we need to understand when we consider why the U.S., often characterized as the richest country in the world, "can't afford" essential services like universal health care, the simple repair/maintenance of our infrastructure, or investment in the technology of the future; and why we lag behind other developed nations in this areas. That's too complex a question to be answered simply, but surely ONE major cause is that we spend far too much on our wars.
In economics textbooks the standard example of this spending paradox was producing "guns" or/and "butter." For years we have thought we could do both; administrations of both parties have encouraged us to believe we could. But over time, the strain of longer and longer wars begins to take its toll, and we get less butter. It can't continue indefinitely.
On related topics, specifically our most recent venture vis-a-vis Libya, I can also recommend two op-ed pieces that appeared today: Gideon Rosewrites about the failure of our leaders, reaching back to FDR and Truman, to think ahead about outcomes before committing to war; Dan Byman considers the ways in which a "simple" no-fly zone in Libya might become complicated.