The Supreme Court is coming back from its winter break and the first argument on its docket is a fight over water rights between Florida and Georgia.

Jennifer Kay, Bloomberg Law’s Florida correspondent, says this dispute is so contentious that, if Florida and Georgia were sovereign countries instead of states within the U.S., warfare may be the only way to resolve it.

The heart of the conflict is a river that runs through both states. Florida says Georgia is withdrawing far too much of the river’s water, to the point that it’s merely a trickle by the time it reaches the state line. Georgia, meanwhile, denies this and says a ruling against it would kneecap its thriving agriculture industry.

We hear from the people living in these states who will be most affected by the court’s ruling. And Jennifer speaks to Cases and Controversies producer David Schultz about how we got to this point in the first place.