[as reported by Nikkei Asia portal](https://asia.nikkei.com/Politics/Defense/Japan-to-upgrade-16-ports-airports-for-defense-from-Okinawa-to-Hokkaido), Japan intends to upgrade its 16 ports and airports throughout the country**. The selected facilities are to be equipped with longer runways and additional waterfronts. This is intended to increase the capabilities and scope of the nipponese Self-defense Forces. The work will besides cover Ishigaki in Okinawa, **which is located about 230 kilometres (300 km) east of Taiwan**.