Forgive me, where did I say the Moskva was a "modern Warship"?The Moskva can’t be counted as a modern Warship, she was built in 1983, and had, had no real updates since 2010.
Every British warship built prior to 1990 has either been scrapped or sold as obsolete.
If you think about it, Moskva was 39 years old when she was sunk, this is the equivalent of the RN still using HMS Belfast as a front line ship in 1983, with only minimal refits etc.
I know the Yanks re-commissioned USS Missouri in about 1986ish but, she was never used against a competent naval adversary.
I simply used it as an example of a flagship that'll cost $750M to replace, being destroyed by a drone worth a few hundred dollars. Source.