Iranian officials threatened retaliation. Iranian officials said the retaliation would end the dispute, but Western officials said Ukraine’s response was unpredictable. After Ukrainian diplomats tried to reduce tensions, Araghchi spoke with Ukrainian Foreign Minister Andrii Sybiha. “I was assured by Ukrainian Foreign Minister Andrii Sybiha that the attack on an Iranian ship was unintentional and Ukraine seeks no escalation,” Araghchi said. Ukrainian President Volodymyr Zelenskyy said earlier that Ukrainian forces struck vessels involved in military cargo shipments linked to Iran, but did not identify any specific vessel.