re: #3 Destro

Neither. This was almost certainly carried out by either the lovely ‘foreign activities” division of the Iranian Revolutionary Guards Corps (IRGC) or Hezbollah’s nearly identical branch for terror attacks beyond Lebanese borders. Both have tried and done this kind of stuff in the past, and have been trying in the past few months (Iran as “retribution” for the assassination of its nuclear scientists, which it blames Israel for, and Hezbollah in its years old “revenge” attempts over the killing of terrorist mastermind Imad Mugniyeh, who they claim was killed by Israel).
Seems that they’ve been successful this time… :(