official, wolf, says the president was very affected by the images of dead children among civilian casualties in the chemical weapons attack and he felt compelled to act. you could see that today in his reaction. >> it certainly was. powerful impact on the president. i want to bring in our pentagon correspondent barbara starr. getting a lot of briefings over there. give us the latest that is coming out of the pentagon. >> well, wolf, here's where we stand at this hour. 59 tomahawk cruise mittles hitting this air base in western syria. we know some more details now about this base. we know that the u.s. believes that the syrians, prior to 2013, stored sarin nerve agent there and, in fact, as they struck it today, the national security adviser, h.r. mcmaster, told reporters that they took special precautions to avoid hitting area s at the base where they still think there is sarin stored there. throughout the day, the u.s. talked to the russians, because