So you can say that instead of choosing the whole roman empire, one can narrow and choose the 4 major portions that became after the Greek Empire was dissolved which happened after Alexander the Great's dead, which are:

1. Macedon (Greece)
2. Thrace (Bulgaria, northeastern Greece and Turkey)
3. Mesopothamia and Persia (Iraq, northeastern Syria, southeastern Turkey and Iran)
4. Levant and Egypt. (Levant=Israel, Lebanon, Jordan, Cyprus, some parts of Syria and Saudi Arabia.

So basically the antichrist has to come from one of these nations mentionted above.

I think that if you fuse these 3 texts you can then say that the antichrist has to come from the EU but still can be of a jewish bloodline. Remember, The highest bloodlines in the Illuminati are jewish. The Rothchilds, Rockefeller etc.
That's why The Vatican put them in charge of the Illuminati so they can be hated and blamed for all that is going wrong in this world. Btw, Hitler was partially jewish but he still slaughtered more then 6 million people during the 2nd WW.

Today, there are greek, german, italian jews. So it is no wonder that the antichrist can come from the EU (the Revived Roman Empire) but still been raised to have judaism as his religion.