I'm not comfortable with blanket statements that "we" need to go into Sudan. This shouldn't be a unilateral thing. We shouldn't be sending the over-stretched and exhausted US Army in anywhere unilaterally at this point.
This has to be an international effort. And we used to have the skilled diplomacy, to create international coalitions for stuff like this: Bosnia, East Timor, Kosovo. Unfortunately, those that voted for Bush twice, and supported the Iraq War, have chosen to throw away our moral authoirty, our diplomatic skill, and our ability to form coalitions. The UN is trying to do something about Sudan, with peacekeepers. But, that had nothing to do with Bush's diplomatic skills.