The Evil False Messiah as prophesied will rule from Israel ?

the jews are waiting for their true messiah to come, because they said that jesus wasn't the real messiah. that is why they are rebuilding temples and stuff, but they haven't said that he already came, because he is supposed to come in the last days. this messiah is what everyone else calls the antichrist. i don't really get the question, because it is jews everywhere not just israel. and israel is supposed to be their promised land, so this whole messiah thing can happen there. it is really confusing