In 2008, Israel was on the edge of a catastrophic drought. It's a populous country in a desert and not on the best terms with its neighbours, and water was hard to come by. So it invested in desalinisation technology.
Now it gets 55% of its water from seawater, cheaply and efficiently. It has so much, in fact, that it is starting to use it in "water diplomacy". It plans, along with Jordan, to build a new, huge plant on the Red Sea, to provide water for the two countries and the Palestinian territories. The leftover brine will go to replenish the falling Dead Sea.
As climate change encroaches, wars over water are expected to become common. Israel may have found a way to avert them.