Over the last several years, Osama was not controlling day-to-day operations. Do you believe Osama was marginalised due to security concerns, or because he and others had decided he would be the face, and the brain could be other people?
Increasing counterterrorism operations had made it difficult for Osama to directly oversee the day-to-day activities of al Qaeda. The group therefore became more decentralised.
Today's al Qaeda is more like a network of ideologically-related terrorist groups, each independent in its decision-making and operations.
How is the death of Osama being perceived in the West? Do people see it as an end to terror? Do you think they are mistaken?
Unfortunately, many in the United States see his death as the "mission accomplished" and call for withdrawal of troops from Afghanistan. This will be a huge mistake. A premature withdrawal will pave the way for al Qaeda's comeback into Afghanistan.
The Afghan government is not yet able to fight the Taliban and al Qaeda on its own. An early exit from Afghanistan will also result in destabilisation and radicalisation of Pakistan.
You live in Washington D.C. We've seen the pictures, but can you describe the mood?
It was a great night of celebration in Washington, D.C. People began to march towards the White House around 11 p.m. And as President Obama officially announced bin Laden's death around 11:45 p.m, the gathering erupted in celebration, hoisting the American flag and singing the national anthem.
Young students and cheerleaders were shouting, "USA, USA!" The news provided relief to the families of 9/11 victims. But there are still a few who have doubts about bin Laden's death and hold different conspiracy theories.
(In Image) Osama's victims: Tara Bane-DellaCorte, whose husband Michael A Bane died in the attacks on the World Trade Center, visits the Garden of Reflection memorial to local victims of the September 11, 2001 terrorist attacks, with her son Cole in Yardley, Pennsylvania, on Monday, May 2, 2011.
Image copyright: AP. Any unauthorized reproduction is prohibited
Ahmad K Majidyar is an expert on political and security affairs in South Asia and the Middle East, with a special focus on Afghanistan, Pakistan, and Iran. He travels frequently to military bases across the United States to instruct senior US Army and Marine officers about culture, religion, and domestic politics in Afghanistan, and about terrorist groups operating in Afghanistan and Pakistan.