Japan possesses all the necessary technology and resources to develop its own nuclear weapons in the shortest possible time should the geopolitical situation become critical.
This assessment was shared by Sergiy Korsunsky, former Ukrainian Ambassador to Japan, during a broadcast with political analyst Yuriy Romanenko.
Discussing the aspirations of various nations—particularly Poland—to acquire nuclear status, Romanenko noted that Japan finds itself in a significantly more advantageous position. Unlike European partners who would need to build infrastructure from scratch, Tokyo already operates a developed network of nuclear power plants and possesses the requisite technology.
"Japan has far greater capabilities... within six months to a year, they could easily possess... basic nuclear warheads," the analyst noted.
Korsunsky confirmed this assessment, emphasizing the country's high level of technological readiness.
"They can do this quite simply," the diplomat agreed.
However, the ambassador noted that political will and the historical legacy of Hiroshima and Nagasaki remain restraining factors. Japan's post-war policy is founded on three non-nuclear principles: not possessing, not producing, and not permitting the introduction of nuclear weapons.
Yet, according to Korsunsky, these restrictions could be revisited in the face of an existential threat.
"But if things get critical—if they are forced into it—then, of course, doing so... would pose no problem whatsoever," Korsunsky concluded.