I highly recommend the following article. The most interesting sentence for me (I like hard, unequivocal sources):
Hebrew sovereignty over Eretz Yisrael is the foundation for proper Torah observance (see Mishnah Torah Hilkhot Ḥanukah 3:1, the Ramban’s supplement to the Rambam’s Sefer HaMitzvot 4, Shulḥan ArukhEven HaEzer 75:6, Pesikta Rabati 34, Magid Mesharim Parshat Vayikra and Ḥesed L’Avraham 3:7) and Hashem’s Divine blueprint for mankind demands Jewish independence in the historic Jewish homeland.
Mitzvos cannot, practically speaking, be fully active without sovereignty (Geography is less important for this; Uganda works).
From Arutz Sheva, here.