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Japan already has one airborne brigade, a battalion-sized special forces group, and is working on a rapid-reaction regiment equipped with air-transportable armored vehicles. If the provocation is small, such as “armed fishermen” planting a flag on an island, the Japanese coast guard-backed if needed by Japanese soldiers-can deal with it.
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Assuming the Japanese navy and air force can secure control of the waters around an island, Japanese ground troops can retake it.
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Japanese troops armed with antiship missiles can foil a Chinese landing, or fight a delaying action to render the island unusable until help arrives.
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