The problem with embassies is that they are considered in fact to be sovereign territory. Which is why someone can enter a foreign embassy and seek refuge, and so long as the embassy sees fit to grant it, the host country has no power to enter the embassy and remove the person. So technically the Saudi security guards were within THEIR rights to act the way they did, if the embassy grounds extended to where he was standing.
Yes, IF. He said he was shooting from the street. That does leave ambiguity as to whether that street is on embassy grounds, or is a public street as I figured he meant.
Too bad some of our own embassies don't seem to be as self-protective.
I do use a digital device in my photographic pursuits when necessary.
When someone rags on me for using film, I use a middle digit, upraised.