From what I am reading, China is not as strong as we think it is. As for Russia, Ukraine is slowly destroying their army.

What does this mean?

That America may remain the only superpower for the upcoming century. Quite of an orthodox perspective....

If you ask me, I believe in the rise of two giants in the same region: Turkey, and Saudi Arabia.

The Saudis dont only have oil and gas: they also have mines.

Add to that the current brain siphoning they are doing + target of 150 million of tourists by 2030 + pragmatic and quick government not embarassed by human rights like we are, and you get by far the most powerful country in the region.