A potential terrorist target - Wall Street is guarded round the clock.
Is al-Qaeda Winning?
Seven years into the global war on terror, is al-Qaeda winning?
Part Three - Money
This programme tests the big promises governments have made about the financial war on terror.
Is it really al-Qaeda's 'lifeblood' or 'oxygen'?
And has freezing assets and bank accounts hindered al-Qaeda's ability to arm its fighters?
Owen Bennett-Jones speaks to leading officials at the US Treasury and the UN Security Council's al-Qaeda and Taleban monitoring committee.
From this a picture emerges of how al-Qaeda is continuing to raise, move and spend money with relative ease.
First broadcast Monday 13th October 2008
Listen (26 mins) with Major Reid Sawyer - Head of Counter-Terrorism, West Point