one of the main reasons is the arab israeli conflict thats been happening since 1948 which revolves around that said by the others. but conflict with lebanon really started when the plo (palestine liberation org) were exiled from Jordan in 1970 and adopted lebanon as their main state. the plo launched missiles from lebanon into israel and from here there were major invasions by israel in 78 and 82. also issues with the occupied golan heights. Lebanon was reluctant to make peace with israel because it would be going against the rest of the arab states it had been supporting sicne the war started, (oil issues)Lani89 said:what are the differences that would have caused their conflicts and misunderstandings?