Somebody either wasn’t thinking, or dismissed the capabilities of the new Missle Early Warning system the Russians recently opened in Krasnodar.
Or wanted to find out whether the Russians would detect it.
It's admittedly a wild theory, but what if the US and Israel chose to not announce the test, in order to see how the Russians would react?
The US may have had the area blanketed with electronic warfare aircraft with the express purpose of monitoring their reaction.
A radar in Krasnodar would have to look across the Black Sea and the Turkish mountains to see that launch, which would seem difficult. Maybe the Russians are operating radars in Syria. Just a thought. You may remember that Johnson was constantly concerned that harming Russians or Chinese in Haiphong could potentially start WW III. I never believed that to be plausible, but Russian Navy interference with the missile launching ships of the U.S. Navy - ...you never know with Putin. No actual ship sinkings, but enough to scare the crap out of POTUS.
I’m thinking it was at least a double test. Test the missile defense and test the Russians to see if they can see.