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海外でも注目されているかどうかはともかく無視はされていない模様

Tokyo weighs options for overseas participation in ambitious F-X future fighter programme
By Greg Waldron29 October 2020
https://www.flightglobal.com/defence/tokyo-weighs-options-for-overseas-participation-in-ambitious-f-x-future-fighter-programme/140862.article

>Foreign collaboration on the programme is tentatively scheduled to begin
>in Japan’s next fiscal year, which runs from 1 April 2021.
>A prototype is expected by 2024, with testing to commence in 2027 and
>full rate production in 2031.