Nothing will happen to Israel. Hammas is destroyed anyway. It has no political arguments and from the military perspective it cannot harm Israel anymore. Regarding America, Obama has recognized that it was foolish to tackle Israel. It is true that he needs jewish money but at the same time he is realizing the disastrous outcomes of a stupid strategy of engagement with radicals. Israel should not fear of a flotilla. Israel is not an occupying power in Gaza, and its policies of blockade maybe RIGHT AND MORAL, but not necessarily usefull. Israel can and should take some risks like opening the blockade. It is indeed a risk but worth of taking precisely because Hammas has no military or political arguments.
U.S. weighs sanctioning Russia as well as China in cyber attacks (Reuters)
from the article: Gaza flotilla drives Israel into a sea of stupidity