BTW Russia and the US at least, saw this coming decades ago. Which was the reason behind the intermediate range missile treaty, which was sadly ripped up in the early 2000s.
They likely are useful now, given their costs are going down and can be used in saturation attacks like Iran just did. A single ICBM with a dozen 500lb bombs can take out an fleet of fighters.
If launched from a nuclear country, the attacked country would have to assume nuclear payload. In the case of another nuclear country, this means nuclear retaliation.
