They don't actually have anything anyone wants, except for a border with China which is why China continues to support them. So nobody thought it was worth bombing them out of existence sixty years ago and nobody thinks it's worth invading today. There's simply no profit in such a venture.
Contrary to what some would have you believe, the US is rarely ever concerned with humanitarian issues. The countries that get more than a glance and a shrug from the US tend to be countries with either strategic or resource value. South Korea gives us a strategic position on the peninsula and between them, Japan and Taiwan we have more than enough bases to keep an eye on those pesky Chinese (do I need a /s here?).
They don't actually have anything anyone wants, except for a border with China which is why China continues to support them. So nobody thought it was worth bombing them out of existence sixty years ago and nobody thinks it's worth invading today. There's simply no profit in such a venture.
Contrary to what some would have you believe, the US is rarely ever concerned with humanitarian issues. The countries that get more than a glance and a shrug from the US tend to be countries with either strategic or resource value. South Korea gives us a strategic position on the peninsula and between them, Japan and Taiwan we have more than enough bases to keep an eye on those pesky Chinese (do I need a /s here?).