oversight of how it would be stored are different from, say, if it had been a listed as toxic type of material. so questions now about what kind of chemical this really was. >> they've got to learn lessons from this, make sure they understand fully the blunders that occurred to ensure that it doesn't happen again. 300,000 people in west virginia for several days now without any water, except for some bottled water, which can be rather expensive. of all right. alexandra, thanks very much. it's a deal designed to keep iran from developing nuclear weapons and it's set to take effect a week from today. but a push for more sanctions could derail that, at least that's what the obama administration is suggesting. we'll have the very latest right after this. [ male announcer ] need help keeping your digestive balance in sync?