The quotes cited by CarolC are the opinions of individuals, an opinion does not constitute a fact.

Some of them are. And those are the opinions of members of the Israeli military and the Israeli government. However, the announcement made by Israel that it intended to attack Syria and overthrow its government is not an opinion, it is a statement of intent.

If this issue were to go to the world court, with the witness testimonies we have and the words of these members of the Israeli government, as well as quite a lot of declassified Israeli government documents, I think the court would be able to not only convict Israel of war crimes, but it would also rule that Israel's occupation of the West Bank, Gaza, and East Jerusalem are illegal (as the UN has already done).