Following reports of the U.S. seizing Iranian oil aboard a tanker off the coast of Greece, the IRGC declared that it had seized two Greek oil tankers, identified as Prudent Warrior and Delta Poseidon. According to industry sources, the former was carrying a U.S.-bound cargo from Iraq and the latter was heading from Iraq to Greece. The Greek foreign ministry delivered a “strong-worded demarche” to Iran’s ambassador, condemned what it described as “actions… essentially tantamount to acts of piracy” and “called for the immediate release of the ships and their crews”. On 30 May, speaking with his Greek counterpart, Secretary of State Antony Blinken denounced the seizure “in the strongest terms” and contended: “Iran’s continued harassment of vessels and interference with navigational rights and freedoms are a threat to maritime security and the global economy”.