NEW : Car ##nage in Afghanistan June 5 after Obama visit . Facing an election at home , the president says ` ` this time of war '' will end . Romney lauds Obama visit , says Afghanistan ` ` success '' is vital . Obama and Afghan President Hamid Khan sign an agreement on future cooperation .
NEW : Car bomb in Kabul kills 5 after Obama visit . Facing an election at home , the president says `` this time of war '' will end . Romney lauds Obama visit , says Afghanistan `` success '' is vital . Obama and Afghan President Hamid Karzai sign an agreement on future cooperation .