The Palestinians in particular, and Arabs in general, refuse to accept the legitimacy of the modern nation-state of Israel for primarily the Jewish people, despite international laws going back 100 years, and despite many diplomatic efforts and wars for them to change their minds and attitudes. Mostly being Muslims, they deny the Father and the Son, and refuse to accept the legitimacy of the everlasting covenantal relationship between YHVH God and the descendants of Abraham, of Isaac, and of Jacob/Israel.
The Jewish people in general refuse to accept the truth of the gospel, and of Yeshua/Jesus being the Messiah and the Son of God, despite having Moses and the Prophets as their witnesses, and many Jewish and Gentile believers telling and showing them otherwise. Israel and the Jewish people struggle with their unique calling as the chosen people of YHVH God, the Creator and the Redeemer, and seek to obtain the prophetic promises by their own self-determination, not recognizing the holy and righteous ways and thoughts of God.
Christians of all streams, where do you stand in relationship with God the Father and the Lord Jesus Christ/Yeshua the Messiah, and with His everlasting covenant with the House of Jacob/Israel and of God’s promise that they will inherit the Land of Canaan forever, which Yeshua/Jesus came to confirm by His sacrificial death and His resurrection? Where do you stand in relation to the Great Commission to preach the gospel to all persons — both Jewish and all others — that they might repent and be saved through faith in the good news of the one, true, living God? You must be born-again from Above by the Holy Spirit in order to see and to enter the Kingdom of God.