I didn't catch which poll Katie Couric references in her interview with Chairman of the Joint Chiefs, Richard Myers, but it's not relevant to my point. She points out that "51% disapprove of the way the president is handling Iraq" (and almost any major poll gives essentially that result." But she then asks, basically "what can you say to the American people to convince them Iraq is worth the continued cost and sacrifice?" (That isn't verbatim.)
Look what she's done there. She uses the question about the president's handling of Iraq as if it is the only available proxy for people's attitudes for whether or not Iraq is worth the cost -- when in fact, there is specific on point polling data that speaks to that question. Remember, by 58 to 38, the Washington Post poll shows people thinking it's worth seeing Iraq through even with continued casualties.
Another attempt to convince people that, whatever they think, other people think Iraq isn't worth the cost now.