In this April 1998 file photo, exiled al-Qaida leader Osama bin Laden looks on in Afghanistan. The Obama administration says Osama bin Laden's death has raised the risk of anti-American violence worldwide. The State Department said in a global travel warning Tuesday, July 26, 2011, that Americans should take precaution and maintain vigilance about terrorist threats, demonstrations and the possibility of violence against U.S. citizens. (AP Photo, File)
Read the article: Special ops chief warns of al-Qaida 2.0
Read the article: 2011 YEAR IN REVIEW: Death of bin Laden tops news
