permanent bases in Iraq. 61% approved of attacks on U.S. forces. A later poll in March 2007 suggests the percentage of Iraqis who approve of attacks on Coalition forces has dropped to 51%. In 2006 a poll conducted on the Iraqi public revealed that 52% of the ones polled said Iraq was going in the wrong direction and 61% claimed it was worth ousting Saddam Hussein. Despite a majority having previously been opposed to the US presence, 60% of Iraqis opposed American troops leaving directly prior to withdrawal, with 51% saying withdrawal would have a negative effect. Scope and size of the Insurgency The most intense Sunni insurgent activity takes place in the cities and countryside along the Euphrates River from the Syrian border town of al-Qaim through Ramadi and Fallujah to Baghdad, as well as along the Tigris river from Baghdad north to Tikrit. Heavy guerrilla activity also takes place around the cities of Mosul and Tal Afar in the north, as well as the "Triangle of Death" south of Baghdad, which includes the "-iya" cities of Iskandariya, Mahmudiya, Latifiya, and Yusufiya. Lesser activity takes place in several other areas of the country. The insurgents are believed to maintain a key supply line stretching from Syria through al-Qaim and along the Euphrates to Baghdad and central Iraq, the Iraqi equivalent of the Ho Chi Minh trail. A second "ratline" runs from the Syrian border through Tal Afar to Mosul. Although estimates of the total number of Iraqi guerrillas varies by group and fluctuates under changing political climate, the latest assessments put the present number at between 3,000 and 7,000 fighters along with numerous supporters and facilitators throughout the Sunni Arab community. At various points U.S. forces provided estimates on the number of fighters in specific regions. A few are provided here (although these numbers almost certainly have fluctuated): Fallujah (mid-2004): 2,000–5,000 In a November 2004 operation, the Fallujah insurgency has been destroyed or dispersed, but had staged a comeback in 2005, albeit not to former strength, in the course of 2005–2008 the remainder of the insurgency was defeated in Fallujah and the rest of Al-Anbar province. Samarra (August 2011): 1,000+ Baquba (August 2011 ): 1,000+ Baghdad (August 2011): 2,000+ Guerilla forces operate in many of the cities and towns of al-Anbar province, due to mostly ineffective Iraqi security forces in this area. There was extensive guerrilla activity in Ramadi,