May I humbly suggest that you are falling into the trap of understanding the Bible as a book, (or more correctly a collection of books), that will provide you with all the answers. It is very much a western mindset that we want definitive answers to questions and that we can't stand ambiguity. The Bible is just not that kind of book.
Regarding Israel it is clear in the Gospels that the promised land of the OT was a foreshadowing for what was to be a worldwide Kingdom of God. Jesus was very clear that the Kingdom is for all nations and that it was to be a Kingdom that was not about borders and nationalities. It si to be a Kingdom of His followers and whose creed is one of love, peace and justice.
I am not anti-Israel at all, but modern day Israel exists because of human politics period.
If you look at the entire narrative that makes up the Bible it is also clear that OT prophesy was based pretty much entirely as a copy of the pagan nations around the early Jews. It was all about getting God on their side in order to defeat their enemies and gain power and land. In a very real sense the idea that modern day Israel is there as an act of God makes Christianity no different than the pagan religions in the pre-Christian era.
May I suggest that a god who would do what you have suggested is not a god of free will. I also suggest that you are misunderstanding the prophesies of Jesus in the Gospel. He does talk about the fact that time will come to an end and that there will be justice. However a great deal of what you suggest is eschatological is really about Jesus' political message, that if the Jews maintain their rebellious ways the Romans will do what they always do, and there will be a blood bath and the Temple itself will be destroyed.
He has told you, O man, what is good ; And what does the LORD require of you But to do justice, to love kindness, And to walk humbly with your God.