The American Empire started falling almost from when it was established after World War II. The decline has hit its acceleration point and the fall has started. From Nebojsa Malic at rt.com:
Don’t take my word for it, though. “If the post-American era has a start date, it is almost certainly today,” argued none other than the head of the Council on Foreign Relations – the foremost think tank advocating for the Empire in Washington – after Wednesday’s storming of the Capitol by several hundred Trump supporters protesting the certification of the election for Biden.
“No one in the world is likely to see, respect, fear, or depend on us in the same way again,” lamented CFR president Richard Haas.