Peter Feaver has suggestions:

[T]he administration has only sketched out a vision of what our role is under the best-case scenario. What is our commitment and obligation in scenarios where things do not live up to the rosy expectations? Given the many partisan (and many justified) critiques levied against the Phase IV planning in the Iraq War which was similarly based on best-case assumptions, the question is all the more on point now. What did Obama say to reassure us that the administration's public spin is not indicative of the quality of the planning involved in this military operation?