It’s not a weird question. There’s no other group claiming territory in Australia. Nor are there any real territorial disputes or territories claiming independence from the United States.

Israel and Palestine have an active disagreement about who owns what territory, and both fundamentally disagree on the other even existing at all. It’s also an extremely relevant topic right now, with Israel being a long time diplomatic and military ally of the United States.

It would be like asking a candidate if Taiwan has the right to exist, which is also very relevant.