A picture released by the US military on March 17, 2008 shows US Republican presidential hopeful John McCain (C) walking with Major General John Kelly (R), commander of the I Marine Expeditionary Force in western Iraq, after disembarking from an MV-22 Osprey aircraft in Haditha, western Iraq on March 16. McCain visited with the mayor of Haditha, prominent members of the sheikh community, and toured the market district in Haditha. The Arisona republican senator said upon his arrival in Iraq yesterday that it was important to maintain a US presence in Iraq because Al-Qaeda, though on the run in the war-torn country, was not yet defeated. Getty Images logo Getty Images 20 months ago

A picture released by the US military on March 17, 2008 shows US Republican presidential hopeful John McCain (C) walking with Major General John Kelly (R), commander of the I Marine Expeditionary Force in western Iraq, after disembarking from an MV-22 Osprey aircraft in Haditha, western Iraq on March 16. McCain visited with the mayor of Haditha, prominent members of the sheikh community, and toured the market district in Haditha. The Arisona republican senator said upon his arrival in Iraq yesterday that it was important to maintain a US presence in Iraq because Al-Qaeda, though on the run in the war-torn country, was not yet defeated.