The threat of al-Qaeda acquiring and using weapons of mass destruction is a top security challenge according to a new report by the US state department.
|Michael Scheuer headed the CIA unit with the responsibility|
for tracking Osama bin Laden
The department's annual 'Country Reports on Terrorism' says Iraq remains the centre of the so-called 'War on Terror' but points to significant progress in the fight against al-Qaeda in the country last year.
At the same time the report recognises that al-Qaeda has been able to rebuild some of its operations capabilities and replace its senior fighters who have been captured or killed.
On Tuesday's Riz Khan Show we talk to Michael Scheuer, who headed the CIA unit tracking Osama bin Laden.
In his books he argues that attacks on the US will continue while its foreign policy remains unchanged.
In a message in September, 2007 Osama bin Laden said: "If you want to understand what's going on and if you would like to get to know some of the reasons you are losing the war against us, then read the book of Michael Scheuer."
Watch part one of this episode of Riz Khan on YouTube
Watch part two of this episode of Riz Khan on YouTube
This episode of Riz Khan aired on Tuesday, May 06, 2008
You can watch Riz live at 1900GMT, with repeats at 0030GMT, 0500GMT, and 1000GMT.
To contact us click on 'Send your feedback' at the top of the page
Watch Al Jazeera English programmes on YouTube
Join our debates on the Your Views section of the site