TOKYO — What does Mr Kim Jong-un want?
That remains far harder to answer than the technical questions about Mr Kim’s bombs and the reach of his missiles that have preoccupied American, Japanese and South Korean intelligence officials for years.
After North Korea’s underground test on Sunday, more is now known about the power of his nuclear arsenal, even if mystery remains about the veracity of the North’s claim that it detonated a hydrogen bomb.
Yet, six years after Mr Kim took power, there is no issue that more confounds analysts than the motives of a 33-year-old dictator whose every move seems one part canny strategy, one part self-preservation, and one part nuclear narcissism.
The conventional wisdom has always been that Mr Kim, like his father and grandfather before him, is mostly motivated by a deep desire to preserve the family business — a small country that is an improbable, walled-off survivor of the Cold War.
But inside the Trump administration, many have begun to question the long-held assumption that his nuclear buildup is essentially defensive, an effort to keep the United States and its allies from finding the right moment to try to overthrow him.
Mr Kim’s real goal may be blackmail, they argue — the sort that would be possible as soon as North Korea can put Los Angeles, or Chicago, or New York at risk.
It may be splitting the US away from two allies — Japan and South Korea — who wonder whether the US would really protect them, and half-expect Mr Trump to make good on his campaign threat that he might pull American troops from the Pacific.
Or, it may be about making Mr Kim a power broker, a man Mr Trump and Chinese President Xi Jinping — leaders of the two superpowers Mr Kim is fixated on — must treat as an equal.
Maybe it is about all three.
In public statements, Pyongyang has made clear that it wants to be accepted as a full member of the international community, and that it wants to develop its economy alongside its nuclear programme.
It has also maintained as a longtime goal the desire to reunify with South Korea — on the North’s terms.
But none of that explains the pace at which Mr Kim — more technically savvy and more brutal than his father — has raced in the past year to develop an arsenal of nuclear weapons that can hit multiple targets in the continental US.
“He wants to demonstrate his ability to put a US city at risk of nuclear attack,’’ Mr Michael Morell, the former deputy director of the CIA, said on the news programme Face the Nation on CBS on Sunday. “That is where he is driving.’’
He has nearly achieved that goal.
The most commonly heard explanation is that Mr Kim believes that once he can hit Los Angeles, or maybe New York and Washington, the US would never risk doing to him what it helped do to Muammar Gaddafi, the deceased Libyan leader. Gaddafi gave up all the elements of his nascent nuclear weapons programme in 2003, in return for promises of economic integration with the West. That never fully materialised. And as soon as there was an uprising against him, the US, European allies and some Arab states bombed him. He was found by rebel forces and executed.
But perhaps more than a self-preservation strategy is at work here. Mr Kim, some Trump administration advisers and outside experts believe, thinks he may be able to force the US to withdraw sanctions and pull back its troops from South Korea, where they are a perennial irritant to Pyongyang.