Not that I'd trust the Iranians any farther than I could throw them, but I'm sure there are numerous entirely legitimate charitable relief efforts going on in the Islamic world. But, even if it was straight up which is an unknown, the problem is that even if the relief supplies got into the Gaza strip, the gangsters would just commandeer them anyway. The Israelis certainly would have been within bounds to board and inspect, it ought to be impossible (for a sane person) to quibble with what they did here.