Iran's Khorramshahr missile may be the BM-25 variant of North Korea's Hwasong-10, which the US calls the Musudan, which is based on the Soviet R-27 Zyb, which the US called the SS-N-6 Serb.

Simple, right? Don't worry! Jeffrey and Scott talk about Iran's latest missile test and what it might tell us about missile development in Iran and North Korea.