Pretend you're a world leader. Another country gives you a generous proposal: You get a bunch of desert in exchange for your aquifer, you have no control over your land and sea borders, you don't get your own airspace, you don't get a military and your police is controlled by the other country, and hundreds of thousands of your people have to move in exchange for a couple thousand of the other country's people needing to move.
Your country is not contiguous, made up of three different, unconnected zones. You say that the corridor between these zones, an underground tunnel, should be your sovereign territory. The other country says no, because it would be ludicrous for their country to be bisected by even the tiniest sliver of foreign territory, but your country should put up with not having freedom of movement between it's own territories. You have to accept foreign invasion and policing at any time, but have no such reciprocal rights.
Lastly, most of the other government hates this idea and doesn't want you to have even this, and the plan is written on a napkin
Do you accept?