Let's say, just for the sake of the argument, that they were given that land by divine decree, as they claim. That very same G*d who, according to them and according to their holy books, gave them that land, also took it away from them in punishment for their misdeeds there, and he forbade them to try to take it back by force. In fact, according to their holy books, he forbade them to try take it back under any circumstances.

Firstly, according to the holy books that I've read, it was the pagan Romans that took away the land from the Jews and sent most of them off into exile.

Secondly, you are a liar when you state that God forbade the Jews from taking back the land. Tell us exactly where in the Jewish holy books that God says that.

As Christians, according our holy books, the Jews reclamation to the land is an essential component in the conditions for the return of our Lord Jesus Christ.