The rising threat of home grown extremism in US

Peter Marshall considers whether a lack of opportunity for open debate in the US might have led these young Muslims to extremism.

Mohamed Elibiary is a counter terrorism advisor who has advised President Barack Obama's Homeland Security Council on home grown terror. He wants more open debate about the big issues that concern many moderate Muslims, like civilian casualties of US troops.

"There's a good chunk of Americans who think if you're holding these discussions then you're not fully on board with the current policy and the current war on terror, so therefore they start questioning your loyalty and patriotism and wondering if you're an enemy within."

So could the young men held in Pakistan have felt inhibited about discussing their concerns in public and sought an outlet online where they became radicalised? - Enemy within

The Next Al Qaeda? - Newsweek.com
Muslim scholar condemns terrorism