I would call that successful.

Canada.com calls the Israeli raid of the flotilla attempting to circumvent the Gaza blockade “botched.”  ORLY?

The blockade held.  The activists and terrorists on the ships were detained.  Five of the six ships were stopped without violence.  The deaths occurred as a direct result of violence initiated by the “peace activists” on the other ship.

Oh, by the way, international law DOES allow for the boarding of vessels breaking a blockade.