Believe it or not, Proton (UR-500) was originally developed as a large ICBM. Hypergolic fuels are a much more attractive choice for ICBMs than kerolox because it's possible to leave the rocket fueled for extended periods of time (potentially years).
Same logic for the US Titan 2 (which also lead to a long-lived family of space launchers -- the last Titan IV flew in 2005), and many other smaller missiles, although recent missile designed have now mostly switched to solid propulsion.
Same logic for the US Titan 2 (which also lead to a long-lived family of space launchers -- the last Titan IV flew in 2005), and many other smaller missiles, although recent missile designed have now mostly switched to solid propulsion.