This picture taken on June 2, 2016 shows workers from COPE (Cooperative Orthotic and Prosthetic Enterprise), holding a prostetic leg at a mobile clinic in Xieng Khoang. The school holidays had only just begun when Viet became one of the latest casualties of the United States' secret bombing campaign in Laos.The 13-year-old was helping his family clear fields in early June when his shovel disturbed one of the millions of cluster bomblets that still litter his homeland.The legacy of that war and its still palpable present day consequences will feature prominently during a visit next week by Barack Obama, the first ever by a US president to Laos. The legacy of the secret bombing campaign the United States conducted in a sideshow to the Vietnam War and its enduring consequences will feature prominently during a visit September 2016 by Barack Obama, the first ever by a US president to Laos. During the trip he is expected to announce the ramping up of a US programme to clear unexploded devices, echoing similar moves Washington took in Vietnam as relations between the two former foes blossomed. / AFP PHOTO / CAROLINE MOLINIE / TO GO WITH AFP STORY LAOS-US-DIPLOMACY-CONFLICT-OBAMA,FOCUS BY CORALINE MOLINIECAROLINE MOLINIE/AFP/Getty Images