Now thats a big claim, thing is, putting a timeframe on anything is pointless really. I mean nobody here is going to remember in 8 years time that you said this and pop up to say " ha ! So much for you, you were all wrong !" When it doesn't happen. This forum will quite possibly not even be around. It would be a different ballgame if you said next year but 8 years is large enough a timeframe that it renders the claim pointless in terms of correct/incorrect comeback.
I might as well say you are wrong and that all the signs show that the next ruling state won't be Israel , that the next ruling state will be Namibia and to mark my words in 8 years time Namibia will be running the world.
Nobody in 8 years time will prove me wrong because it will have been long forgotten.
I'm a kind of told you so person, there is very few things I enjoy as much as proving to someone's face that they were wrong about something, I get a kick from it and a further kick from mentioning it at every opportunity afterwards, but 8 years.... bah, that wrecks my chances of crowing that I told you so
I can't really argue against that, everything you have said is very valid.

If what I say doesn't happen, it will all be long forgotten anyway with no chance of anyone really coming back at me.
However, the timescale aspect is as you said quite pointless. The fact is though that, based on the interpretation of our prophets pbuh hadith (sayings), from the scholar who I follow who in my opinion (and this is only a minority opinion in Islam) has hit the nail on the head in regards to explaining events in the modern age, I am absolutely convinced of his arguments that Israel has to be the 'next' ruling state in the world. It may be 1 year, 5 years, 20 years BUT, for religious prophecy to be fulfilled as it already has been, when the false messiah makes his appearance it has to be in Jerusalem because that is where the true Messiah (Jesus Christ pbuh) was also born and lived, therefore, the imposter/deceiver must also follow this lead.
Lets forget for a second what you or I believe, but many jews are still waiting for their messiah, are you aware of this? Christianity and Islam speak of a false messiah or anti-christ, who will emerge close to the end of history at a time when religion is taken lightly.
Everything leading up to the appearence of this final character, the major events, have been happening over the past 100 years, as I explained with the return of the jews to the holy land, the creation of a jewish state, the increase in power to this jewish state... therefore, if the jews are to accept this person as their messiah, he absolutely must rule the whole world FROM Jerusalem, so mark my words, write my name down, slap me ten times if you must (not really) just remember that Jerusalem will be the capital of the ruling state.
Those who still believe in the One true God, regardless of religion, will recognise this state of Israel as an imposter and will not be deceived. But those who worship anything apart from God, whether it be a prophet eg Jesus or Muhammed pbut, those who worship money, or those who have simply rejected God altogether, will never be able to recognise the true messiah when he comes.