Japan's Prime Minister Shinzo Abe

Japan's Prime Minister Shinzo Abe

Itsuo Inouye/Pool via Bloomberg

Shinzo Abe, Japan's prime minister, center, walks through the emergency operations center at Tokyo Electric Power Co.'s (Tepco) Fukushima Dai-Ichi nuclear power plant in Okuma Town, Fukushima Prefecture on Dec. 29, 2012.