None of those two books are quoted  how am I supposed to know if and to what extent they dispute Hirsts book The quote you do adduce though horribly POV to be honest in no way implies that was a casus belli for the invasion of Lebanon As for the two other sources I added today the book is peer reviewed and therefore is fit for Wikipedia The editorial is syndicated in a mainstream source The Independent and has an extremely notable author when the subject is Israel Palestine and Lebanon Robert Fisk It more than surpasses Wikipedias notability standards And I just added a third book about Israels military history