Japan won't build nukes, say scientists

Japan won't consider developing a nuclear arsenal if the United States adopts a "no first use" policy for such weapons, according to new report by the Ploughshares-funded  Union of Concerned Scientists, titled "Japan and America's Nuclear Posture."

Some conservatives in the U.S. have suggested that such a change in policy would prompt Japan to consider developing its own atomic weapons. 

"The conventional wisdom in Washington is wrong," said the report's author, Gregory Kulacki, who traveled to Japan several times over the past year to interview officials and security experts. "We found strong support in Japan for a U.S. sole purpose declaration. Such a declaration would not undermine Japanese confidence in the U.S. nuclear umbrella." 
The Japan Times