Quick quiz: what is the glaringly obvious thing these two regimes have in common?

Per the Sueddeutsche Zeitung, since this spring, North Korea has been sending nuclear-weapon-related software - originally developed in the United States - to Iran. That's along with the ballistic missile technology we already knew about.

Now, Iran is a theocracy and North Korea is an atheist state built on a personality cult, but they sure do like to work together.