US will continue war on terror, Obama tells Karzai

US presidential contender Barack Obama pledged steadfast aid to Afghanistan in talks with its western-backed leader today and vowed to pursue the war on terror "with vigour" if he is elected, an Afghan official said.

On the third day of an international tour designed to burnish his foreign policy credentials, Mr Obama and other American senators held two hours of talks with President Hamid Karzai at his palace in the Afghan capital, Kabul.