Viet Cong veteran Vo Ban Tam remembers the first time he crossed paths with John Kerry on the banks on the Bay Hap river, a day that ended in bloodshed. Almost a half-century later, the now 70-year-old Mekong Delta shrimp farmer locked eyes with the US Secretary of State on Saturday and they warmly grasped hands in mutual respect. Kerry returned to the Vietnam waterway at the end of a visit to the Communist nation, less than a week before he was to leave office, searching for the spot where he won a Silver Star for bravery as a young...