Do ICBMs have any practical uses besides delivering explosives?
Some of the space launchers today either started life as an ICBM turned dedicated launch vehicle (Proton) or are decommissioned ICBMs turned launch vehicles (Minotaur)
https://en.wikipedia.org/wiki/Proton_(rocket_family) https://en.wikipedia.org/wiki/Minotaur_(rocket_family)
I think the deltaV's needed to place a warhead on the surface are significantly less than those needed to put a satellite into low-earth orbit.
https://en.m.wikipedia.org/wiki/Fractional_Orbital_Bombardme...
The other nuclear powers did not like it and it was scrapped. Not to mention that even if you might get the first shot this way, there will almost certainly be retaliatory strikes back on you.