Washington: President Donald Trump is a reckless bully with authoritarian leanings and a craving for attention. Kim Jong-un is a reckless bully with dictatorial powers and a craving for attention. Oh yes, and both have fingers on nuclear triggers. That's why so many national security experts of both political parties struggle to think of a scarier pair.

It's not just that Kim's outlaw North Korean regime has accelerated its nuclear weapons capacity and delivery capability, or that Kim sees nuclear weapons as his insurance policy against adversaries.

It's also that Trump has displayed little appreciation of history or knowledge and a compulsion to show that he's tough.

Trump has called Kim a "madman", one of the few things he has gotten right about North Korea. Dealing with him, though, requires measured patience and smart diplomacy - not Trump's forte - and a reliance on alliances and relationships that he has dismissed.