What’s next for Japan’s defence after scrapping US Aegis Ashore system?

  • Tokyo’s tracking of a foreign submarine has focused attention on its security plans after it announced the scrapping of a US-developed anti-missile system
  • Factors the country is weighing up include the impact of the coronavirus pandemic and Washington’s commitment to its regional allies

The Japanese Air Self-Defence Force demonstrates US-developed PAC-3 surface-to-air interceptors at the US Yokota Air Base in 2017. Photo: AP
Japan’s tracking of a foreign submarine as it passed through waters off Kyushu late last week has focused attention on Tokyo’s broader defence plans after it announced the scrapping of the US-developed Aegis Ashore anti-ballistic missile system.

The Ministry of Defence has not confirmed the nationality of the submarine, which was travelling west when it traversed the contiguous zone immediately outside the 12-nautical-mile limit of Japan’s territorial waters around Amami-Oshima island. The vessel did not enter Japanese waters, and a destroyer and patrol aircraft were dispatched to track its movements.

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