French police have surrounded a building in a northern town near Charles de Gaulle Airport as part of a massive manhunt for the two men accused of carrying out the Charlie Hebdo massacre. Police say they believe the suspects, Said and Chérif Kouachi, are holed up in a small printing business where they have taken a hostage. Meanwhile, French officials are now saying there is a link between the two brothers accused of the Charlie Hebdo attack and the heavily armed man who shot dead a French policewoman on Thursday. That man is now holding five hostages, including women and children, at a kosher supermarket in Paris. Sources told Reuters the three men were all members of the same Paris cell that a decade ago sent young French volunteers to Iraq to fight U.S. forces. Chérif Kouachi served 18 months in prison for his role in the group. At the time, he told the court that he had been motivated to travel to Iraq by images of atrocities committed by U.S. troops in Abu Ghraib prison. We speak to Lebanese-French academic Gilbert Achcar, professor at the School of Oriental and African Studies at the University of London.