Hiroshima trip will underscore very real conflict risks: Obama

Barack Obama's historic visit to Hiroshima will underline the dangers of warfare and the need to work towards peace, the US president said on the sidelines of the G7 in Japan, today.

"I want to once again underscore the very real risks that are out there and the sense of urgency that we all should have," he told reporters in Ise-Shima, 300 kilometres southwest of Tokyo.