U.S Democratic presidential candidate Barack Obama (R) and Afghan President Hamid Karzai walk at the presidential palace in Kabul July 20, 2008. Obama promised long-term support to Afghanistan when he met with Afghan President Hamid Karzai in the Presidential Palace on Sunday.

Obama kicked off the week-long tour last Thursday with an aim to establish his credentials in foreign policy and national security where the Republican presidential candidate McCain gains upper hand over him.

Obama arrived at Afghan capital Kabul on Saturday as part of a Congressional fact-finding mission, along with two other senate fellows, Democrat Jack Reed and Republican Chuck Hagel.

During his stay in Afghanistan, Obama pledged to pour long-term support to the war-torn country when meeting with Afghan President Hamid Karzai on Sunday. The talks also covered issues of security situation, regional stability, drug fighting, war on terror and bilateral relations.