Indeed, ahead of the summit, South Korea listed three key issues for discussion: denuclearisation was the first, then came the possibility of setting up a permanent peace-building mechanism, and building sustainable inter-Korea relations. 

Practically speaking, denuclearisation is the most important issue because only a nuclear-free peninsula could ensure the sustainable development of inter-Korean relations. If North Korea does not abandon its nuclear programme, the other two items on the agenda cannot be realised. Even if some progress could be made, it would not guarantee long-lasting stability. 

If Seoul had its way, denuclearisation would most certainly have been listed as a standalone issue in the Panmunjom Declaration. That it was not probably means the South gave in to pressure from the North to downplay the issue. 

Of course, under pressure from the international community, Kim is likely to make some concessions on denuclearisation, but they will be limited. This is likely to be his plan – promising “complete denuclearisation” while taking limited steps towards it. 

The calculations that went into Kim’s strategy are not hard to work out. 

If Kim does not want the sanctions to destabilise his regime, he knows he must make some effort towards fulfilling the international community’s demand for denuclearisation. This is why Kim is trying to make the international community believe he will abandon his nuclear programme. 

To achieve this, Kim first stopped threatening war on the world. To demonstrate sincerity, the North toned down its aggression while taking action to improve North-South relations.

As North Korea has repeatedly failed to keep its promises in the past, the international community has become more cautious about Kim’s peace overtures. There is also a view, however, that this young man is a new face, after all, and he might not act like his father. It is also thought that Kim could succumb to the strong UN sanctions.  

Thus, the international community is divided over whether Kim’s intentions are sincere this time. I believe he is sincere in trying to ease tensions on the peninsula and build a stable mechanism for peace, if only because it is under these circumstances that the North Korean economy could be developed. For North Korea to improve its people's livelihoods, there must be peace on the peninsula. Otherwise, foreign investment would not be drawn in, and North Korea's economy would remain sluggish. 

However, it is doubtful whether Kim is sincere in completely abandoning nuclear weapons.  

It is highly probable that Kim is putting on a show over the issue. The more sincere he looks, the more the world will believe he will abandon his nuclear programme.  It is why he agreed at the inter-Korean summit to add the clause about "complete denuclearisation" to the declaration.

To showcase his “determination” to end North Korea’s nuclear programmes, Kim, during his upcoming talks with Trump, might express a willingness to do so and to take some measures, such as disabling nuclear facilities and destroying some less powerful nuclear missiles. Wowed by his "sincerity”, the UN would in turn relax or lift sanctions, and international aid and investment would flow into the country.  

No matter how Kim appears to have changed, his ultimate purpose is to have the nuclear abandonment plan delayed or simply dropped. His new strategy, however, has divided the international community. 

To make him abandon his nuclear programme, a clear-cut timetable must be laid out to force him to do so once and for all, rather than in stages, so that he can have no room to negotiate on the issue.

Deng Yuwen is a researcher at the Charhar Institute think tank. This is translated from Chinese