Asia without America?
No, it will not happen soon, either, just like the case in the Mideast (The Mideast without America?) and Europe (Europe without America?)!
America has been hugely influential in Asia since the end of WWII at least. But this influence has been significantly reduced over the past few decades, thanks to the dramatic comeback of China. As China continues to claim the 21st century, American influence in Asia, as well as elsewhere in the world, will gravely diminish.
By “Asia,” I will limit it to East Asia mostly in this post.