That’s right... Israel also is obligated to supply Jordan with water under the 1994 peace treaty, as Syria cut off part of Jordan’s water supply, part of the none-too-neighborly relationship the succession of Assad dictatorships have had with neighbors.
the bigger problem is that turkey cut off a lot of water to syria as they damned the euphrates river.
even if they bring back syria’s refugees —they return to parched land because the same drought that struck israel in 2000 also struck syria.
the solution is to look to spain’s plastic green houses. its a billion dollar business. they use desalinated seawater because greenhouses use water so efficiently that desalinated water is economic for greenhouses.
there is still a lot of brackish water under syria. that combined with euphrates water would supply sufficient for a greenhouse culture in syria and provde a living for 1-3 million returnees.