1. China has no intention of intervening in a war between the US and Iran, if the conflict takes the form of a short, intense airstrike.
2. If the US wanted Chinese intervention, the most direct way would be to block oil shipments to China. In this scenario, China would indeed intervene, but what benefit would that bring to the US?
3. A complete blockade of the Strait of Hormuz would harm US allies like Japan and South Korea.
4. If the blockade were only targeted at China, it would provoke Chinese retaliation, including a rare earth embargo. All the confrontational tactics you saw in the trade war would reappear.
Overall, blocking the strait is not a wise move. It would be very costly.
If the US were determined to fight Iran, it could easily use its superior military power to ensure the Strait of Hormuz remains open.
The fact that the US is now blocking the Strait of Hormuz in response to Iran's blockade demonstrates a lack of confidence in its ability to resolve the issue militarily.
Perhaps over time, the US will gain more confidence after deploying more troops, but at least for now, they do not.
Some people believe this blockade is aimed at China, but I think this is a misjudgment. This is tantamount to skipping all previous steps in the trade war confrontation and directly entering a state of war. This is not in the interest of the United States.
Therefore, I believe that this US blockade cannot be sustained in the long run, because it will have a negative impact on the US economy.