Not to worry. We have plenty of “deterrent”. The warheads being dismantled are tactical, not strategic. These are the smaller, lower yield weapons that really only served a purpose when used against large military formations. The world changed, and they have no real purpose anymore.
Think about the Navy: 18 Trident subs, each carry 24 Trident missiles with a range of 8400 miles. Each missile can carry 8 MIRV warheads.
3456 warheads on target. More than enough to get some attention.
True, except politics ultimately rules their use.
I could see an ultra-liberal US government scraping the sub fleet.