One cannot reliably knock out a railway line by sporadic cruise missile strikes.

Destroying a railway takes carpet-bombing the line at the length of several kilometres, and then repeating the exercise until the area is…

One cannot reliably knock out a railway line by sporadic cruise missile strikes. Actually, that’s ‘amateurism 1st class’: really, complete waste of time and expensive missiles (50–60% of which is either missing or malfunctioning — no matter what).

Destroying a railway takes carpet-bombing the line at the length of several kilometres, and then repeating the exercise until the area is so heavily cratered, that no repairs would make sense any more.

The GenStab, the RFA, and the VKS — obviously — have no stomach for anything similar: would surely result in a few losses of Tu-22M3s, because these would be easy to knock out by Ukrainian S-300s just while trying to reach suitable spots in the railway system.