It is not a coincidence that Ukraine took out Russia's nuclear air fleet last week and Israel bombed Iranian nuclear infrastructure today.
As inconvenient as nuclear war is, it is the best deterrant toward war that exists... Crippling "enemy" nuclear capabilities is not good
North America could genuinely be self sufficient though it might take us like 10 years to get there and would be a brutal transition but it would be a good thing in the end. Hard to see the U.S. do it solo without a huge collapse in standard of living. But anyway Trump seems to expect us to do it in a few days. Good luck to us!