The president teared up, at times using an index finger to wipe at the corner of his eyes, as he addressed the nation from the White House. He also paused repeatedly as he struggled to keep his composure while speaking of the children - ages 5 to 10 - who had died and the life milestones they now would miss.
He said, quote, "Our hearts are broken."
Shortly before speaking, Obama ordered that U.S. flags be flown at half-staff on public grounds through Tuesday.
(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)