Richard Barrett

Tighter security measures are in place at airports in the United Kingdom and Europe and on all direct flights to the United States, because of what is being described as a credible security threat -… Audio

Yemen's government says it has killed one of the most important al Qaeda-linked militants to be released from Guantanamo Bay - and the man who went on to become the organisation's second in command in… Audio

More now on the double agent who infiltrated al-Qaeda and successfully foiled a plot to blow up an American-bound airliner. Audio