Alva Myrdal was a Swedish sociologist, diplomat and politician. She was a prominent leader of the disarmament movement. She, along with Alfonso Garcia Robles, received the Nobel Peace Prize in 1982. She married Gunnar Myrdal in 1924. source
I don't think that anyone seriously fears that the world can be blown to pieces all together. But what one can fear and rightly so are regional things, like in the Middle East, India, Pakistan, the Korean Peninsula, borders in Africa, etc.