The problem is, if you topple the Kim regime, a unification with South Korea is imminent and bringing North Korea up to the development level of South Korea is

The problem is, if you topple the Kim regime, a unification with South Korea is imminent and bringing North Korea up to the development level of South Korea is would cost trillions of dollars. It might even trigger a worldwide economic recession as the capital markets completely dry up as all investment floods to Korea.