A senior U.S. military commander said on Sunday that foreign fighters who have entered Iraq in recent months are making up a growing percentage of insurgents. General John Abizaid, the commander of U.S. Central Command which covers Iraq, said that while most of the insurgents appear to be Iraqis, "the percentage of foreign fighters over the past several months seems to have increased." He also said the insurgents' ranks likely include "former Baathist criminals." He said foreign fighters infiltrate into Iraq mainly from Syria, but also from Saudi Arabia and Iran. Abizaid said, adding that Syria's intelligence services are not being aggressive enough in dismantling what he called "facilitation cells" inside Syria.