The water supply in the middle east is being threatened by climate changes, shrinking aquifers, and overpopulation. what is most likely the biggest challenge in finding a way for the nations there to cooperate to solve these problems?

The biggest challenge in finding a way for the nations there to cooperate to solve these problems is that the nations involved have a history of solving conflict through warfare.

Explanation:

Although the water supply crisis that affects several countries in the Middle East is a concerning issue that should be addressed by all of the nations being affected working together, the biggest challenge is not how climate change is disrupting natural habitats, but rather that the nations involved have a history of solving conflict through warfare and of not cooperating between each other. In modern times there is a list of different conflicts that Middle East nations had had with each other, with almost all of them being taken into armed conflicts. So in order to find a way for the nations to cooperate and work towards increasing their water supply, they should first agree to avoid, by any means, an armed and violent way of problem-solving the issues.

portugal is the westernmost country in europe.