The introduction of unmanned fighter jets has been considered to succeed the Air Self-Defense Force's aging F-2s, which are expected to start being retired within two decades, as part of efforts to reduce development costs, according to government officials.
The proposal was made earlier this year by Taro Kono, who was defense chief until last month before he became administrative reform minister in new Prime Minister Yoshihide Suga's Cabinet.
The officials, who spoke on condition of anonymity, said discussions in the Defense Ministry were, however, suspended in the wake of the government's decision in June to scrap its plan to deploy the U.S.-developed Aegis Ashore land-based defense system, designed to counter missile threats from North Korea.