So far as the Lebanon parallel is concerned it is now clear that there was in fact a border violation by Israel which initiated the skirmish that set things off.
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None of the media coverage I've seen has appeared to address a key question. This is, when Britain says they were in Iraqi waters and Iran says they were in Iranian waters, is the disagreement about where they actually were physically, or is it about where the border actually lies? Has anyone else had any better luck in finding the answer to that?