if the UK does not condemn this Israeli massacre?
I can tell you categorically, as a former Head of the FCO Maritime Section, that a Turkish flagged ship on the high seas is Turkish territory. This Israeli attack was undeniably illegal.
Having seen so many illegal wars lately, you might be interested to know that in international law Turkey could now with perfect legality declare itself to be at war with Israel. I do not advocate that, but after the fake justification over Iraq I thought you might be interested to see what a genuine causus belli looks like.
But what the UK should be doing is giving voice to the strongest possible condemnation of Israel. What is the point of Lib Dems being in government if we cannot act against this kind of naked atrocity? Economic sanctions against Israel must be a minimum response.