Iran, as we have already discussed, has carried out very, very harmful activities inside Iraq. Funding, trainings, arming and, in some cases, even directing the activities of the special groups associated with the Jaish al-Mahdi and the Sadr Militia.
As quoted in "Ranking House Committee Members Grill Crocker and Petraeus on U.S. Progress in Iraq" in The Washington Post (10 September 2007)
Syria has allowed its soil to be transited by foreign fighters who have come from a variety of source countries in the Gulf area and in the — in North African countries.There are some signs that that may have been reduced somewhat in the last couple of months. We need to watch that a bit and see if that is the case.David Petraeus
Political progress will only take place if sufficient security exists.David Petraeus