That seems to confirm it as a means of shielding dictators and tyrants.
True, but it also shields bona fide diplomats and staff. I was at the embassy in Teheran a few years before the roaches got in. I thought the place was impregnable, but when the outer perimeter guards are in cahoots with the attackers, the walls will fall. In the early 80s, the SAS stormed the Iranian (naturally) embassy in London to rescue hostages. I’ll give them a pass on that one.