China: has like 300 nuclear weapons, none of them stationed outside their country. Has no forward military bases from which to stage or launch attacks, has limited forward radar visibility of incoming attacks. Has a couple SSBM subs which likely operate entirely in the south China sea from which it can launch. Wants to expand to 1000 by 2030.

Russia: Has over 4000 warheads, most aging. Has no meaningful forward military bases outside their country for staging attacks on the west. Has no meaningful forward radar visibility of incoming attacks from beyond its borders. Has a few SSBM subs from which it can launch.

US: Has over 4000 warheads, many aging. Has many hidden, classified, constantly operating SSBM submarines which regularly intentionally cruise to the north Atlantic (near Russia), the south Pacific (near China), and a variety of other locations. Has ground-launched missiles, an air delivery system. Has world class sonar (included super-sensitive listening stations bolted to the bedrock of the east and west coasts) and aggressive drone campaigns to hunt and constantly track Chinese and Russian missile subs to allow them a first kill. Has forward warning radar systems positioned thousands of miles from its borders in northern Canada, in Europe, in the Pacific on island chains. In addition has a massive, the most massive spy satellite network in operation constantly watching other powers in incredible detail. Has a space force dedicated to among other things sabotaging Chinese and Russian space assets with kill switches or remote disable explosives which could be used in aggression to blind their enemy first. Of all major world powers will have the most warning and most time to react decisively in case of a full scale launch and attempted sneak first strike on them by either Russia or China. Stations nuclear weapons with allies in "sharing" agreements where the US has final say on their use and launch in countries from the UK to mainland Europe near Russia to Turkey, is considering such an agreement with South Korea right on China's border.

But tell me again how the US is backed into a corner in this situation and has no choice but to build more warheads and pour hundreds of billions that could feed, cloth, shelter, and provide healthcare to its people into new delivery systems which will fatten and enrich defense contractors to the tune of hundreds of billions of overage costs if not trillions for systems that may or may not even work thanks to contractor greed and sloppiness.