Earlier quoted context omitted.
Iran is also playing its own Uno card here by saying that it would consider allowing some oil and gas shipments through the Strait if they have been bought with Chinese Yuan, than the US dollar. ( The Islamic Republic may grant safe passage to oil tankers if the cargo is traded in Chinese yuan - https://www.lbc.co.uk/article/iran-allow-chinese-ships-hormu... ).
I've never heard the expression "to play one's Uno card." Is this a play on "to play one's Trump card"? I can understand why this phrasing could cause confusion, but want to make sure I'm not missing something.
Trump attacked Iran thinking that this would somehow be good for the US, except it's weakening the petrodollar because it's pushed Iran to simply accept Yuan for oil.