Spy satellite agency analyzes twister destruction for first responders.

Mayor of Moore, Oklahoma said he wants new laws that would require storm shelters or safe rooms in all new homes.

CNN Security Analyst Peter Bergen discusses the possible philosophy behind the meat cleaver attack in London.

Oklahoma Governor Mayor Fallin said the state does give incentives and rebates for storm shelters.

Eyewitness Lauren Collins says she first thought the soldier was killed by an automobile.

Stockholm, Sweden is hit by a third night of riots. CNN's Hala Gorani reports on what's behind the unrest.

Christiane Amanpour explains what's at stake in Iran's June presidential election.

The government has identified "a certain number of people" believed to be involved in the Benghazi attack.