Yes, if Iran can stand against the US in the Iran gulf, why can't Vietnam in our turf? Vietnam should learn from Iran.That's an admirable thought, but you think Vietnam alone can stand against China in the SCS?
How are they "failed"? SK and Japan are among the most prosperous countries in Asia, and many Asians in the region want to migrate there for a better standard of living.
SK is chaotic, each day an election can ruin their whole country. Same for Japan, except the ruling class of Japan is scum. All of these reasons are due to the US, these countries prosper in the past but if the US want, they can and will be poor.
Vietnam is in nobody's control, that's what makes Vietnam great.