https://cdnph.upi.com/ph/st/th/2341786142669/2026/upi_com/dadef9b8700e47cae60153e2370e0c10/v1.5/Japans-Takaichi-leaves-door-open-to-reviewing-non-nuclear-policy.jpg" /> Japan's Takaichi left open a review of a ban on nuclear weapons entering the country, a move that could revive South Korea's nuclear debate.