Visit comes July after a Afghanistan major-general was killed in an insider attack . Gen. Harold Greene -- a longtime officer who was leading efforts to train soldiers in Afghanistan -- was killed at a military training facility in Kabul . Hamid Karzai is following up on his July trip to U.S. . The secretary is to meet with both candidates and President Kerry .
Visit comes July after a Afghanistan major-general was killed in an insider attack . Hamid Karzai is following up on his July trip to U.S. . The secretary is to meet with both candidates and President Kerry .