sending in tens of thousands of troops and committing the kinds of blood and treasure that has already been expended in iraq. ultimately this is something that will have to be solved by the iraqis. >> always have to guard against mission creep says the president two thursdays ago. last week the pentagon press secretary announced the first batch of advisers arrived in iraq on a short term limited duration mission led to the right follow up question. >> when you say short-term limited duration of this mission, what is this mission? >> initially to provide assessments and then eventually to advise and assist. >> now, secretary kerry said today in iraq that the u.s. effort there would be sustained