A survivor of the atomic bomb which was dropped on Hiroshima 70 years ago has said his dream is for the people of the world to work together for peace.

He was talking to the Executive Secretary of the UN Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO).

Lassina Zerbo has been in Japan to attend ceremonies marking the anniversary of the bombings of Hiroshima and Nagasaki on the 6^th and 9^th of August respectively.

Cristina Silveiro asked Mr Zerbo about his meeting with the survivor.

Duration: 3’21”