Winning the 'War on Terror'?

A decade on from the 11 September attacks on the Twin Towers in Manhattan and on the Pentagon and can we say whether the 'War on Terror' has been won?

Osama Bin Laden is dead, but has al-Qaeda been defeated?

And most importantly, after ten years, have the lessons of the worst terrorist atrocity to be committed on US soil been learned?

To mark the anniversary of the attacks RTÉ's Jonathan Clynch asked some of the experts who have been analysing these matters over the past decade to assess how the US and the world has changed since that fateful day.

Listen here.

Journalist Jason Burke has written extensively about al-Qaeda, and has reported from battlefields from Kandahar in Afghanistan - to Fallujah in Iraq.

He has just published his latest book, the critically-acclaimed '9/11 Wars'.

He spoke to RTÉ's Sean O'Rourke about the current strength of al-Qaeda.

Listen here