^Completely different. First of all, Russia was ruthlessly pushing through Japanese forces, at the time. The two nukes dropped were tiny in comparison to nukes from even 30 years ago. Today’s arsenal is quite ridiculous. The weapons now are quite capable of apocalyptic damage. Realistically, we’re only talking about Russia. Other countries are potential threats,but not like Russia. A Russian military advisor during the Crimea ‘incident ’ mentioned strategically striking Yellowstone, setting off the super volcano under it. A small exchange, or so would change the world for the worse,for the foreseeable future.
Let’s say North Korea got their nukes successfully mounted to successfully accurate missiles. They strike (somehow through our air defense systems ) LA, Sacramento, and Hawaii. Would the US surrender to N. Korea as a result? Of course not.
The only nukes that will be detonated in the future, will be by terrorist attacks, or maybe an exchange between India,and Pakistan. Until Iran becomes a nuclear power. Then ,maybe they try to nuke Israel.
Bottom line is that nukes have one purpose, when it comes to current military strategy. They Are a mutual deterent ,as they ensure mutual destruction of not only the countries involved, but the world itself.
Do some research on the capabilities of nukes now compared to the ones used in WWll. They are only a tool of cataclysm. Not a realistic, deployable weapon.
Plus, let’s say hypothetically, the US surrender’s to your hypothetical attacker. I would wager most gun owners wouldn’t give up. A lot of them would fight their own government. Let alone some foreign invader. The only way to take out America, is to wipe it off the map. Or maybe a chemical, or biological weapon. Weather it nukes, chemical weapons, or biological weapons, the results would be catastrophic for the entire world.