csmonitor.com: After 12 years Mohamed ElBaradei stepped down on 27 November as head of the International Atomic Energy Agency.He is replaced by Yukiya Amano, a quiet and experienced team player who jokingly tells colleagues he is the only Japanese they will ever meet who doesn’t play golf, watch baseball, or sing karaoke.The transition takes place amid growing international concern over Iran’s nuclear program, which has increased its number of centrifuges (crucial for enriching uranium and making nuclear fuel) from zero to 8000 in recent years, with at least two violations of the IAEA rules.