In Japan and South Korea there is deepening concern over the reliability of long-time American security guarantees – whether the U.S. will come to their aid in the event of a war. This has been turbo-charged by Donald Trump’s tough treatment of traditional U.S. allies, which has some in Tokyo and Seoul calling for a reassessment of their non-nuclear policies.
It means they have motivations, and seek those motivations in a rational way.
Meaning they are religiously motivated, but that doesn’t mean they behave in unpredictable ways. They’re not going to launch a nuke just because they feel like it. On the contrary, they have shown a great deal of restraint.