Well, according to some, it’s due to drought caused by global warming.
Seriously. That’s really what some folks are claiming.
That’s just par for the course, though. As the linked article also shows, eighty years ago the idiots in charge in Damascus blamed freaking yo-yos for causing a severe drought – and banned them.
Historical climate data shows that Syria and the rest of that part of the Middle East has been subject to periodic droughts for literally thousands of years. And yet there are tools who come up with this kind of pseudo-scientific crap to try and justify their cause du jour - as well as gullible fools who eat it up like candy.
Looks like the old quote erroneously attributed to P T Barnum was right. There really is one born every minute.