Maybe the oleogenous effendis greased their palms..
The supply ship Kharg is much more interesting. The Kharg is the largest ship in the Iranian Navy displacing around 33,000 tons and is a modified Olwen class fast fleet tanker. This is a big ship, and with the current tensions between Israel and Hezbollah, Israel is likely very concerned about what the ship is carrying. As a Navy ship rather than a commercial ship, the ship will not be searched for cargo so the concern by the Israeli's is that the ship could carry weapons to Syria where weapons can be unloaded and sent to Lebanon. There are rumors that go back several years that the Kharg has been often been observed in the Gulf of Aden delivering weapons from Iran to destinations like Eritrea and the Sudan.
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How can the US Navy address this? Well, if I was given 5-star rank for a day I would sail my Arleigh Burke class destroyer along side the Iranian Navy flagship for a “wave and hello” and take a photograph of the two ships side by side while underway. I realize that strategic communication is a forgotten, and perhaps lost art in the US Navy, but if you put a photograph on Navy.mil with the two warships in near proximity that illustrates the sheer size difference between the flagship of the Iranian Navy and a US Navy Arleigh Burke class destroyer, I will predict that the unofficial PASSEX is worth several thousand words to a great many reporters and Americans while also being a photograph worth about $14 million in savings to the US energy economy a day.