Likutei Moharan 20:6/ליקוטי מוהר"ן כ׳:ו׳

16. Now, in the merit of the Torah which we draw, we merit to the Land of Israel, as in (Psalms 105:44), “And He gave them the lands of the gentiles.” But the Land of Israel is one of the three things which are acquired through suffering (Berakhot 5a). And the main suffering is the detractors, the wicked people, those “who had given a bad report about the land” (Numbers 14:37).

2The first thing that has to be done is to subdue these wicked people, and to punish them with the sword and with death. By doing this, it is afterwards possible to go to the Land of Israel. Yet, it is impossible [to acquire] the power to punish the wicked except when this power is received from EDoM. For this is his power, as in (Genesis 27:40), “But you shall live by your sword.” He draws from the planet Ma’EDiM (Mars).