The same way it happened in second half of the 20th century. The US flexes it's muscles and Russia, China, and other nuclear power up the stakes with more weapons, not to be outdone by the US. The administration then claims America will be in great danger if they don't meet these challenges and congress gives the administration zillions of dollars. Other nations, not to be left behind continue the insanity.
I served during part of the Cold War and I know it sparked an arms race back then........but that Cold War has already been started by Obama and his policies with Russia in Syria.....................
Putin and China are increasing production already..........
FInally, Our existing Nuclear stockpile is old and outdated.....I posted an article where they can't even shut the dang hatches due to freaking rust...........Not to mention having to fire the weapons from a 3.5 inch FLOPPY DISK...........
This state of disrepair is RIDICULOUS................These dang facilities are holding our freaking Nukes...........and this needs to be fixed.........PERIOD.....