Syria News: Chemical Weapons Evidence Allegedly Includes 'Panicked' Call So many developments happening right now. This just in, the first confirmation for the u.N. Team in syria. The civilians were attacked by a chemical substance, killing hundreds. The u.S. And britain have made the charge. Now, the u.N. Is weighing in, as well. And the fallout could be affecting us here at home in the u.S. Major american websites were knocked out overnight by vicious cyber attacks. Big concerns that financial institutions could be targeted. "The new york times" hit yesterday. A syrian hacking group taking credit. And this, as all the stock markets here and around the world, are sliding fast for the second day in a row, with prewar jitters. Attack jitters. Coverage in the middle east, here in the united states, as well. Starting with martha raddatz in the region, tracking all of the latest from jerusalem right now. The u.S. Has a slew of evidence about this chemical attack, including intercepted conversations between syrian commanders. The u.S. And its allies have had massive surveillance operations, aimed at syria, since the conflict began. Focusing especially on its chemical weapons stockpiles, which contain hundreds of tons of mustard and sarin gas. Abc news has learned that part of the intelligence the u.S. Has gathered in the apparent CHEMICAL ATTACK OF AUGUST 21st, Came from just such an intercept, one with a syrian commander. Foreign policy reports that one panicked call was between an official at the syrian ministry of defense, and the leader of a chemical weapons unit. This evidence, coupled with the survivors and the doctors who treated them, is what has convinced the u.S. At the highest level, is no doubt that the attack, that likely killed upwards of 1,000 people, was carried out by the syrian regem. The president believes and i believe, that those who use chemical weapons against defenseless men, women and children, should and must be held accountable. Reporter: The warships in place. Cruise missiles at the ready. The u.S. Military waiting for the go ahead, which could come at any time. If it comes, you're ready to go, like that? We're ready to go, like that. Reporter: U.N. Inspectors do remain on the ground right now. And, george, the u.S. Would want them out of there before they struck syria. We're waiting for word from the white house, with the final intelligence report to come out. We'll hear from the president, as well. In the aftermath of the iraq attack, there was a discrepancy on chemical weapons.