I'm not pretending anything and what I did is not "mass deletion" - it's replacement of POV material with reliable sources. Before my latest edit, the Shlomo Argov edit did not even make sense - it couldn't, since the latter half of the paragraph that completed the first one was removed and replaced by something unrelated. What's more, all the material inserted by me today - about Israel's casus belli and the UN's commission's finding that Israel was responsible for the massacre - was there before my latest edits and only got removed, possibly by POV-motivated authors, this month. You can see both edits were already there months ago. Both edits are well sourced and, after a cursory look at the editing history, it can be seen whoever removed them did not give an explanation for their actions. The casus belli edit has as a source David Hirst's book about Lebanese history. The book was widely reviewed on mainstream media, and praised. It sits at the top of Wikipedia's reliable source chain. And even though this isn't required, the book is excerpted to show it supports the edit's content. In case anyone's in doubt, several other sources give support to Hirst's narrative. Remove it all you like - I, too, can revert you tomorrow again.