But sanctions will at least limit how strong its army is. Presently, its conventional army would easily be beaten by SK alone.

"Since the armistice in 1953 nearly 70 years ago the US has given no indication that it has any intention to invade NK."

The US doesn't invade nuclear armed countries, It invades weaker countries.
It prefers to overthow autocratic / non-democratic countries with coloured revolutions, and then it robs those nations of their resources.

That's why Russia, China, North Korea and Iran are all on the hit list.

Democracy is the vehicle where they can best rob and steal a nation of its assets, and control and socially engineer the populace, in accordance to elites global agendas.

If you think I'm wrong didn't they sell the ports, the rail, the post, the electricity companies etc. and what did they give back?
Transgender toilets, All Men are Rapists, Diversity Quotas for foreigners and all the other woke crap.

AC,

The US didn't invade NK for the 60 years before it had nukes.

As far as I know, Russia is a nuclear-armed state.