The United States, braced for retaliation over the killing of Osama bin Laden, is worried that a “lone wolf” attack would be hard to defend against, Homeland Security chief Janet Napolitano said Wednesday.
Napolitano laid out the possibility that a US citizen radicalised through the Internet could strike in the US to avenge bin Laden who was killed on May 2 in a US commando raid in Pakistan. She did not elaborate, but the threat of attacks by individuals was brought home in 2009 when army major Nidal Hasan was charged with going on a shooting spree at an army base in Fort Hood, Texas, killing 13 people.
