Daniel Drezner (supported by Megan McArdle and Glenn Reynolds, but not by Brad DeLong) has responded to my criticism of his claim that the US should be able to invade foreign countries whenever its “vital national interests” are threatened. Drezner narrows the gap between us a bit, saying that most members of the FPC are more skeptical about the effectiveness of military force than they used to be (though of course, plenty of members in good standing are pushing for a war with Iran that’s even more certain to fail than the war with Iraq), and saying
there is a big difference between not taking force off the table as a policy option and advocating its use in a particular situation. As Quiggin observes, force is a really messy option and carries horrendous costs.
Drezner dismisses concerns about international law, quoting James Joyner’s observation that the UN Charter prohibiting war has mostly been observed in the breach. Joyner only mentions the US, but Drezner goes on to claim that
This applies to every other state in the international system as well. Quiggin wants international law to be a powerfully binding constraint on state action. That’s nice, but what Quiggin wants and what actually happens are two very different animals.
A couple of questions arise here. First, is Drezner’s claim that the international law prohibiting aggressive war is a dead letter factually correct? Second, would the US (more precisely, the people of the US) be better off if the option of unilateral resort to (non-defensive) war was taken off the table or at least put further out of reach?
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