A contentious debate over nuclear power in Japan is also bringing another question out of the shadows: Should Japan keep open the possibility of making nuclear weapons — even if only as an option?
It may seem surprising in the only country ever devastated by atomic bombs, particularly as it marks the 67th anniversary of the bombings of Hiroshima on Aug. 6 and Nagasaki three days later. The Japanese government has officially renounced nuclear weapons, and the vast majority of citizens oppose them.
However, as Japan weighs whether to phase out nuclear power, some conservatives, including some influential politicians and thinkers, are becoming more vocal about their belief that Japan should have at least the ability to make nuclear weapons.
The two issues are intertwined because nuclear plants can develop the technology and produce the fuel needed for weaponry, as highlighted by concerns that nuclear power programs in Iran and North Korea are masking bomb development.
“Having nuclear plants shows to other nations that Japan can make nuclear weapons,” said former Japanese minister of defense Shigeru Ishiba, now an opposition lawmaker.
Ishiba said that Japan is not about to make nuclear weapons. However, he said, with nearby North Korea suspected of working on them, Japan needs to assert itself and say it can also make them — but is choosing not to.
Such views make opponents of nuclear weapons nervous.
“A group is starting to take a stand to assert the significance of nuclear plants as military technology, a view that had been submerged below the surface until now,” says Fukushima Project, a book by several experts with anti-nuclear leanings.
Adding to their jitters, parliament amended the 1955 Atomic Energy Basic Law in June, adding “national security” to people’s health and wealth as reasons for Japan’s use of the technology.
“The recognition that both nuclear issues must be addressed is heightening in Japan,” said Hitoshi Yoshioka, professor of social and cultural studies at Kyushu University.
The link between the two is “becoming increasingly clear.”
Yoshioka sits on a government panel investigating the nuclear disaster spawned by the March 11 tsunami last year. The subsequent meltdowns at the Fukushima Dai-ichi plant have called into question the future of nuclear power in Japan, in turn raising concern among some bomb advocates.
Most proponents do not say, at least not publicly, that Japan should have nuclear weapons. Rather, they argue that just the ability to make them acts as a deterrent and gives Japan more diplomatic clout.
The issue dates back to the 1960s. Historical documents released in the past two years show that the idea of a nuclear-armed Japan was long talked about behind the scenes, despite repeated denials by the government.
The papers were obtained by Japanese public broadcaster NHK in 2010 and more recently by reporters under a public records request.
In a once-classified 1966 document, the government outlined how the threat of China going nuclear made it necessary for Japan to consider it too, though it concluded that the US nuclear umbrella made doing so unnecessary at the time.
In meeting minutes from 1964, 1966 and 1967, Japanese officials weigh the pros and cons of signing the nuclear non-proliferation treaty, which would mean foregoing the nuclear option. Japan signed the treaty in 1970.