The attempted bombing on Christmas day — and a recent message purportedly from Osama bin Laden — have focused new attention on al-Qaeda and its aims.
A report this week from a former senior C.I.A. official warns that al-Qaeda is being patient but has not abandoned its goal of carrying out another major attack on the U.S. — with a chemical, biological or nuclear weapon.
For more, Daljit Dhaliwal interviews Rolf Mowatt-Larssen, senior fellow at the Belfer Center for Science and International Affairs at Harvard University.
The man who allegedly tried to blow up a U.S. jetliner on Christmas day spent several years studying in Britain.
Umar Farouk Abdulmutallab was president of the at University College London’s Islamic Society — which has been under scrutiny in recent weeks.
Nadim Baba of Al Jazeera English reports from the university and interviews students who knew Abdulmutallab.