RTX1OIYK
17 Aug. 2015
Vienna, Austria
Lassina Zerbo, head of the organisation preparing the Comprehensive Nuclear-Test-Ban Treaty (CTBT), talks during an interview with Reuters in Vienna, Austria, August 17, 2015. World leaders should use the momentum of the Iran atomic deal to haul a 20-year-old treaty on banning nuclear explosions out of limbo and speed the stagnant pace of disarmament, the head of the test ban treaty organisation said on Monday. REUTERS/Heinz-Peter Bader
