TOKYO/TAIPEI (Reuters) – Japan remains cautious about signing up to the China-led Asian Infrastructure Investment Bank (AIIB), indicating that Tokyo will miss the March 31 deadline for application, but both Taiwan and Norway said they would seek to join the institution. Finance Minister Taro Aso reiterated Japan’s concerns about governance at the AIIB, its debt sustainability and environmental and social safeguards. “Unless these conditions are secured, Japan has no choice but to be very cautious about joining,” Aso told reporters after a cabinet meeting.