Who’s responsible for the Fukushima disaster?

http://www.japantimes.co.jp/news/2015/10/03/national/media-national/whos-responsible-fukushima-disaster/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+japantimes+%28The+Japan+Times%3A+All+Stories%29#.VhFR6KSKI-8