Five former Japanese prime ministers issued declarations that Japan should break with nuclear power generation on March 11, the 10th anniversary of the Great East Japan Earthquake and tsunami that triggered a nuclear disaster in Fukushima Prefecture. The 3.11 Declarations" were issued at the "Global Conference for a Nuclear Free, Renewable Energy Future: 10 Years Since Fukushima" held by the Federation of Promotion of Zero-Nuclear Power and Renewable Energy. Former prime ministers Morihiro Hosokawa, Tomiichi Murayama, Junichiro Koizumi, Yukio Hatoyama and Naoto Kan signed and released their declarations during the conference. In his declaration titled "Don't hold back on reversing a mistake: A zero-carbon emission society can be achieved without nuclear power plants," Koizumi said, "When it comes to the nuclear power plant issue, there is no ruling party or opposition party. Nuclear power plants expose many people's lives to danger, bring financial ruin, and cause impossible-to-solve nuclear waste problems. We have no choice but to abolish them." Before issuing his declaration, Koizumi reflected on his days as prime minister in a keynote speech, and said: "Japanese nuclear plants are safe and on budget; they offer clean energy that doesn't emit CO2, and are necessary for economic development. I was told all of this, and I believed it. But as I've gone about reading books on nuclear plants, I've realized I was wrong."