The legal grounds: The oil was shipped by a US company in violation of US law. American companies can't do business with an organisation that the US government has designated as a terrorist organisation. Thus American authorities siezed the ship and its cargo.

So...will they seize the companies assets and arrest the CEO for violating the sanctions?

Because that's how you stop this shit.

There is a lot of misreporting and misunderstanding about this. OFAC (Office of Foreign Asset Control) exists within Treasury and is responsible for enforcing sanctions usually created by executive order ("EO"), or very rarely, Congress. EOs and OFAC interpretation are very specific: some sanctions, such as the ones on the export of Iranian crude/products, are explicitly extraterritorial. Meaning, the US reserves the right to come after you no matter what country you are a citizen of or where you company is domiciled. It's very rare for them to try this one anyone who doesn't have US nexus since there is not much practically speaking they can do, but they could in theory. OFAC has, no pun intended, FAQs for all of this easily found at their site.

Now, this case was extra stupid. Oaktree is the single biggest PE investor in shipping, going in heavy starting a bit before the financial crash and going in really big with Eagle Bulk c. 2012 or so. Oaktree is, as stated, a US company, but that wasn't the main reason: they did this transaction in USD. Which was stupid, but having met the bastards at Empire a few times, I can say they are not the brightest bunch (as as far as I understand they are doing most of this kind of work in EUR with some shady banks nowadays anyway). Anyway any transaction in USD goes through the SWIFT system (which is why kicking Russia out of it was such a massive deal). This means there was simply no way this was not going to get eventually scanned since banks have repurposed their AML programs into sanctions programs or subscribe to sanctions-specific services like PoleStar's PupleTrac (what my company uses) or Windward or Lloyd's, etc. Now the dirty secret is that the banks don't really understand movement data that well, but Empires has done this (and Venezuela) so often for so long, someone at Treasury probably said, "OK, since we got Oaktree all up in this, let's make an example of of these guys to scare others away from these trades."

[spoiler alert: it did not scare others away from these trades and most folks estimate there are about 1,000 large tankers that form a so called "Dark Fleet" trading in Iran, Venezuela, and now Russia since both crude and product have broken the price cap at all Russian export locations. You cam make about 40% more shipping such cargos than legal ones.]

Anyway, I digress, The the point is that OFAC doesn't care if you have US nexus; it just makes you easier to catch if you do. Source: I am the head of credit and compliance for a large oil company that works closely with the shipping industry.

They could at least give Iran back their oil. This is like when cops steal your jewelry and claim civil forfeiture.

You can tell from the comments in this post that Americans are immune to propaganda.

This is the best summary I could come up with:

The US government seized nearly 1 million barrels of Iranian crude oil allegedly bound for China, according to newly unsealed court documents and a statement released by the Department of Justice on Friday.

“This is the first-ever criminal resolution involving a company that violated sanctions by facilitating the illicit sale and transport of Iranian oil,” according to the DOJ.

The Islamic Revolutionary Guard Corps, a US-designated foreign terrorist organization, allegedly shipped more than 980,000 barrels of oil, the press release stated.

The DOJ claimed that “multiple entities affiliated with Iran’s IRGC and the IRGC-Qods Force” were involved in the scheme to “disguise the origin of the oil” and illegally sell it to China, according to court documents.

The court filings also show allegations that “profits from oil sales support the IRGC’s full range of malign activities, including the proliferation of weapons of mass destruction and their means of delivery, support for terrorism and both domestic and international human rights abuses.”

In April, the company operating the ship carrying the oil, Empire Navigation, pleaded guilty to conspiring to violate the International Emergency Economic Powers Act.

The original article contains 239 words, the summary contains 184 words. Saved 23%. I'm a bot and I'm open source!

I think the proper word here is "liberated"

US navy commiting piracy on the open seas because they're the only substantial naval force that exists globally

Seriously though, they do this to Argentina too lmao.

So much for free trade