I think this is a question of great importance to the end times.
What would make it authentic? Land borders and real estate? The religion of the Phraisees (modern Judaism) or the DNA of the Hebrews?
God's acceptance? Why are the people so white, and why are the dark-skinned ones treated with contempt? How come Tel Aviv is a homosexual capital of this planet, even though that is against the Torah?
What are Christians supposed to think about it? Are we supposed to wait and see? Or are we to serve with money, warfare, and adoration?
Isn't it illegal to preach Christianity there? What are we to do about that? We complain when dictatorships have such rules, but what should our position be on that state?
I would not worry about it for it will all be worked out,and put back to the norm as per Israel when she prospered in the Old Testament,only better.
God said He is going to gather all the Jews from out of the Gentile nations,and put them back on their land,and leave none of them left in the nations.
God will give the world 7 years to have their way,and cause all people that do not love Him to follow the beast kingdom,so He can end this sin business on earth,for God will not give up on the world,until they give up on Him,and bring Israel to the truth that Jesus is their Messiah.
The man of sin will establish peace in the Middle East,which will pave the way for all Jews to go back to the land of Israel,and the Gentile nations will come together,and say,Peace and safety,which they will try to achieve peace on earth,and the Jews and the Gentiles will be separated.
The Jews will split Jerusalem with the Palestinians,and the Jews will rebuild their temple with no hassle from the Palestinians.
Israel is blinded in part,until the fulness of the Gentiles be come in,and so all Israel shall be saved.
Israel is blinded in part for they acknowledge the Old Testament,but not the New,for the majority,but Israel as a nation must come to the truth that Jesus is their Messiah.
Until the fulness of the Gentiles be come in,when salvation is no longer available to the Gentiles.
And so all Israel shall be saved,from physical attack after the 7 years period,and physical Israel will become spiritual.
During the first half of the 7 years period,salvation is available to the Gentiles,and Israel is blinded in part,so they will go back to animal sacrifices.
At the middle of the 7 years period the man of sin steps in to their temple,and claims to be God and their Messiah.
The man of sin addresses the world that he harnessed the power of nature,and obtained power,and says there is no personal God to help mankind,and all who do not love the truth will follow him.
When the world takes the mark of the beast then salvation is no longer available to the world,and the fulness of the Gentiles will be come in.
God will send 2 witnesses to Israel to turn them to the truth for the last half of the 7 years period.
After the 7 years period the man of sin,and the world attack Israel,and Jesus comes with all His saints,and defeats the world,and saves Israel,and the kingdom on earth will be restored to the Jews.
It does not matter what goes on in Israel,for it will be all straightened out in due time,and the true Jews will all go there.
If there is imposters there now,confused as to their identity,there would be true Jews there for this fact.
God said as birds flying He will take control of Jerusalem,which is Israeli fighter pilots,as they paved the way to win the 6 day war,and take control of Jerusalem.
God would only use Jews to do this since it is His plan to restore the kingdom to them,and His working with them,or so it would seem.
There may be imposters in Israel,but there would be true Jews also,but eventually all the Jews,who are actually Jews,will come from out of the nations and go back to Israel as decreed by God that He will do this,for He said He will bring the whole house of Israel,the house of Jacob,all twelve tribes,and bring them back to Israel,and leave none of them left in the nations.
Whatever happens in Israel now will all be straightened out,whatever needs to be straightened out,and the Jews on their land in the truth in the future.