In considering then, the passage "And his feet shall stand in that day upon the mount of Olives" (Zachariah 14:4) regarding the return of Jesus; in light of all that is written about the future of Israel being "with God", it is best to consider the passage not taking place on earth, but in heaven.
But if you start reading the beginning of chapter 14, the nations are attacking Israel. They won't be attacking Israel in heaven. The attack takes place on earth and Jesus returns to the mount of Olives on earth.
@BillTaylor