Marisa Katz in The New Republic:
There are echoes of Bosnia and Rwanda in the proposals for a war-crimes tribunal for Darfur. The members of the Security Council–including the United States–have been reluctant to volunteer their own troops, expand the size or mandate of the small contingent of African Union cease-fire monitors now on the ground, or do anything more than threaten to consider sanctions. Talk of a war crimes tribunal, however, allows the appearance of moral concern while avoiding the messy politics of intervention. It is a way for the great powers to assuage their guilt as they stand by and do little else.
More here.