Then, in January 2017, Fox News said that more anonymous sources had told them the Iranians had test fired a new, then unknown missile, with the name Khorramshahr. It reportedly flew approximately 600 miles with an unknown apogee before exploding. According to Reuters, a U.S. military official said this was the same type Iran had tested in July 2016. It is very possible that the video shown during the opening of Sacred Defense Week 2017 was from this test.
Separately, in July 2017, Iran formally opened the Imam Khomeini Space Center near Semnan with the launch of a Simorgh space launch vehicle, which the United States and other critics say is simply a cover for work on an intercontinental ballistic missile. This launch occurred the same a month as North Korea’s first demonstration of the Hwasong-14 intercontinental ballistic missile.
We cannot say conclusively that Iran and North Korea are actively working together on ballistic missile developments, but the timelines and past precedents heavily point to continued cooperation on advanced weapons. Though the Khorramshahr is liquid fueled, it is possible that this engagement could lead to improved solid fuel designs, which troops can set up and fire faster, similar to North Korea’s Pukguksong series.