I believe it was.
yes, but then you have acknowledged that you have zero experience of such situations.
had this raid had full Israeli cabinet approval, it's entirely reasonable to assume it would have been approved only with the proviso that deadly force was not to be used, as they'd have wanted to avoid the major international incident that this has become.
The IDF is a relatively well structured organisation, and had the orders been to avoid deadly force, and the orders had come from the full cabinet, then they'd likely have had to go back to the full cabinet for further orders providing that their soldiers lives weren't in immediate danger. Had they done this, it's likely that the full cabinet would have negotiated the release of the prisoners rather than authorise an immediate deadly assault on the boat.
Those on the boat were not to know that the raid had been secretly planned and approved by hardline elements in the Israeli government, sidelining those voices who would have insisted on such levels of restraint being shown.
These are the sort of calculations that those of us who are / have been involved in direct action / confrontational protests sometimes have to make in order to stand up to the overwhelming forces ranged against us, and make our point in a way that's difficult to be ignored. Sometimes it goes badly, resulting in the death, injury or imprisonment of those making that stand, but that doesn't necessarily mean that the decision to make the stand was wrong.
In death, maybe it's possible that these brave Turkish men will have achieved more than the ever could have hoped to achieve to end the blockade in life. They have my total respect and admiration for their efforts, and willingness to stand up and defend themselves against apparently overwhelming odds for a cause that they and I believe to be just.
If the blockade isn't ended by the time of the next floatila, I predict that it almost certainly will be after it, as the next floatilla is likely to be far too big for the Israelis to stop. I'd certainly seriously consider being on it.