security precautions

U.S. President Barack Obama, right, speaks during a meeting with Abdurabu Mansur Hadi, Yemen's president, in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, Aug. 1, 2013.  (credit: Andrew Harrer/Getty Images)

Tighter Security At Some US Missions Over al-Qaida

Security forces closed roads, put up extra blast walls and increased patrols Sunday near some of the more than 20 U.S. diplomatic missions in the Muslim world that Washington had ordered closed for the weekend following warnings of a possible al-Qaida attack.


A policeman secures the area in front of the White House after blasts rocked the finish line of the Boston marathon.  (credit: MLADEN ANTONOV/AFP/Getty Images)

Boston Marathon Blasts Put World’s Cities On Alert

The deadly explosions at the Boston Marathon reverberated on both sides of the Atlantic as cities from Los Angeles to London saw a surge in security.