The leading Israeli daily, Yediot Ahoronot, has estimated the cost of attempting to down this Iranian flotilla at between $2-3 billion dollars. The implications of this single number are substantial.

Professor Postol writes:

This indicates that the cost of defending against waves of attacks of this type is very likely to be unsustainable against an adequately armed and determined adversary.

The videos show an extremely important fact: All of the targets, whether drones or not, are shot down by air-to-air missiles, [fired from mostly US aircraft. Some 154 aircraft reportedly were aloft at the time] likely firing AIM-9x Sidewinder air to air missiles. The cost of a single Sidewinder air-to-air missile is about $500,000.

Furthermore:

The fact that a very large number of unengaged ballistic missiles could be seen glowing as they reenter the atmosphere to lower altitudes [an indication of hyper-speed], indicates that whatever the effects of [Israel's] David's Sling and the Arrow missile defenses, they were not especially effective. Thus, the evidence at this point shows that essentially all or most of the arriving long-range ballistic missiles were not intercepted by any of the Israeli air and missile-defense systems.

Postel adds, "I have analyzed the situation, and have concluded that commercially available optical and computational technology is more than capable of being adapted to a cruise missile guidance system to give it very high precision homing capability … it is my conclusion that the Iranians have already developed precision guided cruise missiles and drones."