It's always been the case with Russia. Rich in natural resources. But it doesn't mean that they'll attract investors. If it wasn't for the war, we'll have to deal with corruption. Other BRICS countries are similar. Brazil. China. India.
Anyone can invest in the U.S. We have an open and vibrant economy.
The bottom line is that other countries are no longer interested in financing our deficit especially in a currency that is destined to lose considerable value over time. The recent rapid increase in the price of gold should clue you in as to where all of this is heading.