Unfortunately, on October 7th 2023 Israel learned that relaxing meant her citizens would be massacred, tortured and kidnapped. As preemptive strikes go, for me, this is fairly understandable.
Israel may or may not have the right but she has the ability. Syria is still settling. Who knows what sort of society will happen there?
Doesn't Jordan have fairly normal relations with Israel? I don't see stories about Israel targeting Jordan's weapons.