Russia is pretty stretched. A better question is why isn’t China.
“A better question is why isn’t China.”
given that china obtains 50% of its oil from iran, i suspect china would prefer a more stable situation with iran, and an iran with the ability to deliver missiles topped with nukes would be anything but stable, and in fact would most likely start a worldwide nuclear holocaust in less than a generation ...
China has already said it is backing Iran. They have even sent plane loads of help.
All China cares about is will the oil keep flowing.
If there is a change in the government of Iran it is quiet possible Iranian oil production will eventually go UP.
It is also quite possible it will go down in the sort term.
However, IF the government of Iran becomes more friendly to the world in general that is good for all people.
China may not be able to buy the Iranian oil at a discount to the current market, BUT the production of oil will increase. Eventually bringing down the price.
Iran really does not have ANY friends in the world. They just had countries that would buy their oil IF they sold it cheaper than every one else.