In this Quora article, someone said the following.
...but I have no memory of it because of an abundance of ale. I think we also solved world poverty, and it somehow involved making a parking lot of most of the Middle-East and London.
I asked what it meant and this is the explanation I've got (a good one, I love the wording).
...everyone considers every rock most holy to their particular group. So if you just flatten out everything and make it as non-holy as possible – i.e. a parking lot – it’s not holy to anyone anymore, nobody has any reason to fight...
I'd like to start using that expression but I can't judge how widely spread it is or, at least, how easy to figure out the message would be. I had to ask, so it's not obvious. On the other hand, I might be too slow to get it, making me not representative for a general case.