US President Barack Obama expressed fears about nuclear terrorism yesterday, a doomsday scenario of what would happen if terrorists somehow got hold of nuclear weapons. It was good that in the same statement, he also expressed satisfaction with the safety arrangements in place to protect the nuclear weapons of Pakistan. The fears he has expressed are the ones that haunt the world because the terrorists would obviously wish to flaunt this greatest coup of all should they are able to lay hands to a nuclear weapon. Nuclear proliferation, therefore, is a grave issue and I think countries that are not capable of protecting their nuclear arsenal, must refrain from acquiring this technology. -FARUKH SARWAR, Islamabad, April 7.