Tehran has “demonstrated that it is intent on sowing chaos in its own backyard,” he said. EU foreign policy chief Josep Borrell called the Iranian attack “an unprecedented escalation and a grave threat to regional security.” European Parliament President Roberta Metsola said the Iranian attack “risks igniting further chaos across the Middle East,” adding that the EU “will keep working to de-escalate and stop the situation spiralling into more bloodshed.” The region had been on high alert for a possible retaliatory attack from Iran after an Israeli strike killed a senior Iranian officer at an embassy in Syria. U.S. officials had deemed the threat from Tehran as real and viable.