Comment by XorNot

It was pointed out to me that you shouldn't overthink it: the most likely thing which happened is Israel had someone inside Hezbollah procurement and used them to take delivery (I'd put much lower odds on this guy being in on the plan, it's doubtful he even knew he was working for Israel directly).

You've got to remember that as internet people, we want everything to have a clever storyline to it. Intelligence services exploit that exact expectation though: the first thing you attack is trust within the organization itself, since it gives you more access, more easily and once people have talked themselves into "supply chain threat" there's a real danger they've ignored "actually the guy signing off on the paperwork is taking a payoff to ignore some delivery irregularities".