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Tsuruta Jun

Tsuruta Jun

The Diplomat

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Japan Has Been Here Before: The 1987 Persian Gulf Crisis

When the Gulf was last closed to tankers, Tokyo faced the same dilemma it faces today.

01.10.2026 20

The Diplomat

Tsuruta Jun

China Coast Guard Exercises ‘Jurisdiction’ in Japan’s Exclusive Economic Zone

Japan now needs to formulate its response.

22.07.2026 10

The Diplomat

Tsuruta Jun

Chinese Marine Scientific Research in Japan’s Exclusive Economic Zone

Beijing is operating without permission. Tokyo must act.

19.10.2025 20

The Diplomat

Tsuruta Jun