launchers placed on three sides of the city. all of this, as you said, the defense secretary ash carter pointing out that raqqah in syria is next on the list, and the campaign to take over the isis de facto headquarters could well overlap with the mosul campaign, as well. it's going to be a very different battle. for one thing the two cities are in different countries here in iraq. there is a central government controlling the fight with the help, of course, of the u.s. and others and peshmerga fighters. but in syria, central government not involved. it's going to be up to local fighters to do the hard work with a lot of help from american air power. carol? >> michael holmes reporting live near mosul, iraq, this morning. a horrific bombing out of southwestern syria. at least 20 children have been killed after preregime warplanes bombed a school complex. 15 adults also died. the toll is expected to rise as crews continue to search through the rubble. activists blame syrian military