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The fact is, unless the nation is invaded or its very survival is imminently threatened, going to war is always a choice. So what is the point of trying to make this elusive distinction anyway? For many, including Obama, the present purpose is to distinguish Afghanistan from Iraq, Obama's "good" war from George W. Bush's "bad" war. But it won't work. As Haass correctly argues, right or wrong, they were both wars of choice.
But there is a deeper reason, as well, for Obama to claim necessity in Afghanistan.
http://www.latimes.com/news/nationworld/nation/la-na-obama-vfw18-2009aug18,0,838307.story
It is part of what increasingly seems to be a striving for moral purity in international affairs by this administration. Obama and his top advisers apologize for America's past sins, implicitly suggesting they will commit no new ones. And that goes for fighting wars. No one can blame you for fighting a war if it is a war of necessity, or so they may believe. All the inevitable ancillary casualties of war -- from civilian deaths to the occasional misbehavior of the troops to the errors of commanders -- are more easily forgiven if one has no choice. The claim of necessity wipes away the moral ambiguities inherent in the exercise of power. And it prevents scrutiny of one's own motives, which in nations, as in individuals, are rarely pure.
This hoped-for escape from moral burdens is, however, an illusion. Just because America declares something necessary doesn't mean that the rest of the world, and especially its victims, will believe it is just. The claim of necessity will not absolve the United States, and Obama, from responsibility for its actions.
As Reinhold Niebuhr pointed out long ago, Americans find it hard to acknowledge this moral ambiguity of power. They are reluctant to face the fact that it is only through the morally ambiguous exercise of their power that any good can be accomplished. Obama is right to be prosecuting the war in Afghanistan, and he should do so even more vigorously. But he will not avoid the moral and practical burdens of fighting this war by claiming he has no choice. An action can be right or just without being necessary. Like great presidents in the past, Barack Obama will have to explain why his choice, while difficult and fraught with complexity, is right and better than the alternatives.
Robert Kagan, a senior associate at the Carnegie Endowment for International Peace,
http://www.carnegieendowment.org/experts/index.cfm?fa=expert_view&expert_id=16&prog=zgp&proj=zusr
writes a monthly column for The Post.