TOKYO: Japan reaffirmed its decades-old pledge never to possess nuclear weapons on Friday after local media reported that a senior security official suggested the country should ​acquire them to deter potential aggressors.

The unnamed official said Japan needed nuclear weapons because of a worsening security environment but acknowledged that such a move would be politically difficult, public broadcaster NHK and other outlets reported, describing the official as being from Prime Minister Sanae Takaichi’s office.

At a regular press briefing in Tokyo, Chief Cabinet Secretary Minoru Kihara said Japan’s nuclear policy had ‌not changed, but declined ‌to comment on the remarks or ‌to ⁠say whether ​the ‌person would remain in government. There is a growing political and public willingness in Japan to loosen its three non-nuclear principles not to possess, develop or allow nuclear weapons, a Reuters investigation published in August found.

This is driven in part by doubts over the reliability of US security guarantees under President Donald Trump and growing threats from nuclear-armed ⁠China, Russia and North Korea.

Japan hosts the largest overseas concentration of US military forces ‌and has maintained a security alliance with Washington ‍for decades.