Except they weren't out of their jurisdiction. The whole "International Waters" bollocks is a total smoke screen, as is the "illegal Blockade". Under International Law, a blockader can stop and board any vessel believed to be attempting to run the blockade anywhere other than in a Neutral country's territorial waters, with the exception of that country giving permission for such boarding. Not only that, but the blockader must attempt to turn about or stop all vessels without exception, if they don't, then they are considered to have dropped the blockade. There is no distinction made for who is being blockaded or why.
As a result. Israel was not only allowed to border the vessels after they refused to turn about or dock elsewhere to avoid the blockade, but in order to keep the blockade, they were legally REQUIRED to board the ships. It was that, or drop the blockade altogether, and I can't see that happening.
A final note, my offsider at work is ex-British Army, retiring at the rank of Major. He has been involved in campaigns in Northern Ireland, both West and East Germany, the Falklands, Bosnia, and Kosov. He only avoided Iraq both times and Afghanistan due to the fact he was training the guys that actually did go. He has been trained in boarding ships, and has had to do it during conflict. When we talked about the Israeli operation he was genuinely surprised that they went onboard carrying paintball rifles, his squad would have carried assault rifles. When asked how he would have reacted to the treatment the Israelis faced on that boat he was straight to the point. "I'd have shot and killed someone."
I'd be interested in knowing how many of those claiming the Israelis were in the wrong and should have done better have actually served in the armed forces, and have been trained and actually taken part in such operations, and how many are just Monday morning Quarterbacks.