Pictures from inside the Sandy Hook Elementary School released by Connecticut authorities show how Adam Lanza shot his way into the school building through a glass window.
He went on to kill 26 people, including 20 children.
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The First Lady gave an enthusiastic backing for the Democratic presidential frontrunner in a speech at the Democratic National Convention.
Vitaly Stepanov, who helped uncover the Russian doping scandal, says the IOC is less concerned about ridding world sport of drug cheats.
Colombian drug lord Daniel Barrera Barrera was fined $10m for manufacturing hundreds of tonnes of cocaine that he trafficked globally.