genetic factors," Lacourse explained.

About the twins cohort

This twin study was initiated by Michel Boivin of Laval University and Richard Tremblay, who is also affiliated with the University of Montreal and University College Dublin. All parents of twins born between April 1995 and December 1998 in the Greater Montreal area (Canada) were invited to participate, which resulted in the participation of 667 monozygotic and dizygotic twin pairs. Monozygotic means the twins originated from the same embryo – they are genetically identical. Dizogytic means they developed in separate embryos, meaning they are not identical.

Mothers were ask to rate their twins physical aggression, by reporting behaviour such as hitting, biting, kicking and fighting, at the ages of 20, 32 and 50 months. "The results of the gene-environment analyses provided some supporthave provided immense detail of the Saddam-terror connection.

Iyad Allawi, the former prime minister of Iraq, said that his government collected proof of such ties. He said that Ayman al-Zawahiri attended the Popular Islamic Conference in Baghdad in 1999, an event chaired by the Iraqi vice president that brought together representatives of terrorist groups from around the world. Allawi said that Iraqi intelligence facilitated the travel of Ansar al-Islam operatives in the north, and he confirmed that the U.S. gave intelligence to Iraq via Jordan about the location of Abu Musab al-Zarqawi in Iraq in 2002, but the Iraqis did not take any action.

Mark Eichenlaub of RegimeOfTerror.com did an interview this summer with Matthew Degn, a former senior advisor to the Iraqi Interior Ministry and a U.S. Army civilian