The remarkably inept interdiction at sea by Israel of an aid convoy headed for Gaza, has highlighted a number of issues wrt the blockade and their handling of the interdiction.
1 The 20 mile sea cordon sanitaire around Gaza is not recognised by anyone other than Israel.
2 When intercepting a ship at sea the rules of the game are that you contact the captain and, if he refuses, the country that "flagged" the ship (in this case it is some flag of convenience). Israel did not do that.
3 The interception took places 40 miles outside Gaza (ie in international waters, outwith the Israel cordon).
In short, aside from the loss of life, Israel has not handled this well and will suffer serious "blowback".