A reader asked me the other day why I was writing about marijuana legalization in Canada instead of President Trump's tangled relationship with Saudi leader Mohammed bin Salman.Simple. Because it's more fun to go to Canada to write about pot than to write about the Mideast. But now that I'm back in the U.S.A., let me address the Saudi issue. I told you so.For as long as I've been writing about Saudi Arabia, I have had nothing but bad things to say about the place. A month after the 9/11 attacks, I wrote, "If Saudi Arabia had only sand, we...