That was my point indeed.. flight hours translate to wear and tear, maintenance and spare part usage. And sourcing some of the spare parts is getting harder and harder by the day.

Some defense industry in Russia is already buying back airframes from abroad.. this reduces the value of the Russian defense sector as these countries can shop elsewhere.

And countries with large Russian military hardware stocks cannot get parts in the foreseeable future.. so they also cannot wage war without serious risks to their own readyness.