Zionism is defined as

" the national movement for the return of the Jewish people to their homeland and the resumption of Jewish sovereignty in the Land of Israel."

The Land of Israel as defined in the Bible is all the land between the Nile and the Euphrates.

Genesis 15: 18–21 as taken from ESV.org.

“18. On that day the LORD made a covenant with Abram, saying, “To your offspring I give 1 this land, from the river of Egypt to the great river, the river Euphrates, 19. the land of the Kenites, the Kenizzites, the Kadmonites, 20. the Hittites, the Perizzites, the Rephaim, 21. the Amorites, the Canaanites, the Girgashites and the Jebusites.”

That is the Zionist dream. If that isn't your dream then perhaps you shouldn't consider yourself a Zionist. https://medium.com/@billyjones_52047/greater-israel-the-far-right-zionist-dream-73e4fb6a7af9