You understand that America built its huge expansive empire before the invention of the hypersonic missile correct? There is not going to be another empire in the way America did it literally ever. America may very well be the only nation in the history of humanity to have built its empire literally uncontested by any other nation on earth. Every other nation was blown to bits and the ones that weren’t blown to bits were abysmally poor, and even the ones that were abysmally poor were also blown to bits. Could Russia figure out a way to build something like America a different way? Maybe, but that’s pretty unlikely.