Last week I posted a visual timeline highlighting nuclear, missile and other "provocations" by the North Korean regime since 2006. The data show a clear escalation, especially in missile tests, since Kim Jong Un took power in late 2011.

It's been more than 70 days, though, since the last provocation. The most-recent incident was the firing of an intermediate-range ballistic missile — most likely the Hwasong-12 — over Japanese territory into the Pacific Ocean. It was the latest in a flurry of tests this year.

Some, though, have been heartened by this slowdown in recent weeks, suggesting that tensions between the United States and North Korea might be cooling.

What actually might be happening, however, is that the temperature is cooling in Pyongyang, as Adam Taylor noted in The Washington Post today.

Here's an updated version of the timeline, showing just the Kim Jong Un era:

And this simple bar chart, which categorizes provocation dates into common seasonal quarters, shows that Pyongyang's efforts seem to cool, if you will, late in the year under Kim's leadership: