The targets appear to have been a group of military facilities, including a center for weapons research and development. Among them is a Syrian-Iranian factory for upgrading the precision of surface missiles. - Debka
...the Israeli Air Force was for the first time operating under an American aerial umbrella. - Debka; the reason that there was no response from the Russian S-300/S-400 batteries.
The reason there was no response from the Russian S-300/S-400 batteries is because they are worthless junk that can't shoot down anything other than airliners flying straight and level at 30,000 ft.