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In page 1974 attack on the Japanese Embassy in Kuwait:

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The purpose behind the attack was to provide support to the four guerrillas trapped on a ferry named Laju they hijacked in Singapore after a failed attempt at destroying a Royal Dutch Shell refinery. The men had been trapped on the ferry for 7 days until they surrendered their weapons and freed their hostages, as a result of the embassy attack they would be flown to Kuwait and then to Yemen.