I'm with you up to the 7th head. Your explanation of the first six empires as "MSR" would also be understood as the "known" world, as highlighted by each progressively getting larger. But on the other hand the United Nations contains nearly all of the nations of the "known" world including the E.U. One must follow the Daniel 2 image "timeline" and demonstrate who the feet and toes of clay and iron are? Ten nations of the U.N. have the ability to make fire come out heaven and destroy, they are the ten toes. Soon another crisis like the covid 19 will be upon the world and the scriptures will be fufilled.
The second beast with "two horns" is not "the false prophet". The first beast is explained in Rev. 17: 7-11, the seven mountains are kingdoms that rule over all men of their time as Daniel 2: 37,38 explains. The 8th king "Satan" has always been an influence in the affairs of kingdoms. And Yeshua the mountain crushes them all!
It sure wasn't Jews, there were none around that's why it's called desolations. And they still have to stand at the western wall look up and ask the Lord, "when will Messiah come ?"
If any man have an ear, let him hear, Rev. 13; 11 is the United States, verse 12 the United Nations, verse 13 Hiroshima and Nagasaki, and verse 14 the image Israel.