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Seoul food for thought

How much should the United States do to address the threat from North Korea, especially in light of its recent blustering? None of the broader strategic options look very attractive. Trying to bribe Pyongyang toward normalcy hasn't worked in the past, but imposing additional sanctions and issuing direct military threats risks unwanted escalation. And nobody really wants to see North Korea collapse, at least not suddenly or soon. Although it is easy (and commonplace) to exaggerate the actual threat that North Korea poses (see Stanford's Siegfried Hecker here for a useful corrective to the alarmism), its past behavior and opaque decisionmaking do provide genuine grounds for concern.

According to today's New York Times, U.S. and South Korean officials have developed plans for proportional military responses to any North Korean military action. It sounds like the familiar "tit-for-tat" response analyzed at length by Robert Axelrod and others, and these preparations (and the publicity surrounding them) are clearly intended as a deterrent warning. In essence, Washington and Seoul are telling Pyongyang that it won't get a free pass if it uses force. That's the right response, I think, because the last thing Kim Jong Un wants right now is a military humiliation that jeopardizes his standing with the rest of the regime.  

But there is a larger dimension to this problem that doesn't get enough attention. The North Korea situation is another one of those cases where U.S. interests, though not zero, are a lot smaller than those of our local allies. North Korea does matters to us, but it matters a lot more to South Korea, Japan, and, of course, China. The typical U.S. instinct in such situations is to assume it is Washington's job to deal with the challenge and to get its local allies to go along with whatever response we have in mind. That instinct was in full display back in late March, when the U.S. responded to various North Korean threats by sending a couple of B-2 bombers to conduct a highly publicized mock bombing run.

Given Asia's growing strategic importance and the value of local allies there, the United States cannot appear to indifferent to the problems that North Korea poses. But it is equally important that Washington get its Asian allies to step up and do their fair share too, instead of free-riding on American protection. It's a tricky line to walk: We need to do enough to assure them that we have their back, but not so much to convince them that Uncle Sam will take care of everything. Among other things, exaggerated dependence on U.S. protection enables states like South Korea and Japan to remain aloof from each other, instead of working to resolve their own differences and cooperating to address shared regional security concerns.

I don't know the operational details of the "proportional responses" that the U.S. and South Korea have prepared, but I'd like to see South Korea take the lead in dealing with any North Korean military provocation, in consultation with Washington and with firm U.S. backing. South Korea is far wealthier than its northern counterpart, and its military forces are much more capable. North Korea may have the world's fourth largest military in terms of personnel, but South Korea's forces are far better equipped and better trained and would win a conventional war if one were to occur. (Among other things, the South Korean defense budget is about twice as large as North Korea's entire GDP). Consistent with the terms of our mutual defense treaty, the United States should stand willing to help South Korea in the event of direct provocation. But encouraging those whose interests are most directly affected to lead is a smart long-term strategy. The United States won't get the help it wants from its Asian allies if we insist on doing most of the work ourselves.

JUNG YEON-JE/AFP/Getty Images

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