Sutta quotation, re: cause of war

I was recently given an English paraphrase of a suttapitaka quotation
to the effect that "all war is caused by sensual desire, only sensual
desire".

Although I've read a few essays that (claim to) gather the salient
quotations on warfare, I don't recall this one.

Does anyone know the Sutta that contains this quote?  It would
interesting me to find the original Pali (in context) --but I would
have trouble searching through the computer record of every sutta that
contains the phrase "Sensual desire"!

E.M.