KJ is, of course correct.
Regarding your reference to the United States, the OP’s question would be like asking if the continent of North America can count on British support. But that doesn’t make any sense. Do you mean Canada? The US? Mexico? All of the above? Two of the above? Parts of all three countries?
So if you mean to ask if, say, the United States can count on British support, it would be silly to write that as regarding the continent of North America rather than the United States.
Similarly, but liHavdil, Eretz Yisrael is a geographic area, not a political entity.
The State of Israel happens to be located on a large portion of the landmass of Eretz Yisrael, just as the United States happens to be located on a large portion of, liHavdil, the landmass of North America. That is, as you wrote, the reality “on the ground”.
So the OP’s title should obviously, read, “Can the Sate of Israel rely on..”, and not “Can E”Y rely on…”