Direct retaliation laughable, more like direct aggression and Israel is good at it. Its existence is based on waging wars. A bully that does not care about international law. How many time Syria attacked Israel. Retaliation is in response to an attack. Israel will pay dearly one day.
UN says deal reached on increasing flow of supplies to Yemen (AP)
from the article: Reports: Israel destroyed Hezbollah-bound missile shipment in Syria