There are many logistic corridors outside of Israeli control, most will not allow uncertified arms to be transported. Certainly no European countries would export arms to Gaza. I suspect (almost) no Mediterranean countries would. Syria has been so damaged by recurrent israeli attacks that the government could not control exports, Libya since Western attacks also has no functional government, but those are the only two risky countries for arms exports.They come right out and say that they want to disrupt the blockade, and open a logistical corridor into Gaza outside of Israeli control.