(U.S. President Barack Obama speaks about the shooting at Sandy Hook Elementary School in Newtown, Connecticut, during a press briefing at the White House in Washington December 14, 2012. A heavily armed gunman opened fire on school children and staff at a Connecticut elementary school on Friday, killing 26 people including 18 children in the latest in a series of shooting rampages that have tormented the United States this year, U.S. media reported. REUTERS/Larry Downing)
