The US Airforce has a plan to replace the current ICBMs in the 2030s. There is time to negotiate this
Factoid few are aware of:
70% of US nuclear warheads are on US submarines. 36% of Russia’s warheads are on submarines.
The disparity is from awareness that distances from the coast(s) to ICBM bases in Dakota Wyoming Montana is so much shorter than that for Russia. The Russians get much more warning of warheads inbound and time to respond than the US does.