China's pedro yuan, what will it do the americas economy and status as the leader of the world?

It has began! China plan to take control of the world biggest oil supplier, which is against the petrodollar agreement. Saudi Arabia, our biggest ally has substantially raised their oil prices probably because their econ is crashing. Other countries who went against the Petro-Agreement were met with swift force from the us government but China has a huge army and alot of allies who also don't like the US.
What's to come of all this? World war 3 or the collapse of the US economy? Or perhaps the US doesn't actually rely that much on other countries, I doubt it but we shall see.

Thanks for reading!! What do you think? Please let me know below.