Oh, totally, this is NK responding to various pressures produced on them by POTUS Trump.
For sure, he made them see that the path they were on would be disastrous, now that the USA has a real POTUS.
How much China helped, time will tell, but that pressure came via Trump’s efforts, too.
Trump squeezed them hard on trade, embargo, and economy; he pressed hard on NK neighbors, especially China; he made it absolutely clear to Kim Jong PooPoo that NK’s course was a disaster scenario that had to change fast.
We must make sure they do not try to pull any fast one on the road to nuclear and missile disarmament, but this certainly sounds like a breakthrough.
Maybe Kim and some of his honchos can retire to villas in the south of France???