North Korea's Musudan intermediate range ballistic missile, also known as Hwasong-10 or BM-25, was first publicly flight tested for service in the Korean People's Army Strategic Force in mid 2016 as one of the first of a new generation of strategic munitions alongside the Hwasong-12, Hwasong-14, Hwasong-15 and Pukkuksong-2. These platforms all notably built on the basis technologies developed for less sophisticated predecessors which marked the early stages of the country's missile program - platforms such as the, Rodong-1, KN-02 Tochka and prototype Taepodong-1 from the 1990s. The new missile was designed to carry multiple warheads which would deploy separately upon atmospheric reentry, and could strike targets at an estimated range of 4000km. This placed U.S. Air Force Andersen Air Force Base on Guam and the nearby Naval Base Guam,&nbsp;3,400km away from Korea,&nbsp;within&nbsp;strike range - with both these facilities critical to American power projection in the Western Pacific and of growing importance as increasing numbers of assets are concentrated there. Other critical facilities such as&nbsp;United States Fleet Activities Yokosuka, a sprawling 2.3 square kilometre site which houses the Navy's Seventh Fleet, are also well within the missile's range - with multiple warheads allowing them to overwhelm enemy air defences with even a relatively small salvo.&nbsp;Little more than a year after the Musudan's induction the Islamic Republic of Iran unveiled its own intermediate range missile - the Khorramshahr -&nbsp;which&nbsp;very closely resembled the Musudan.&nbsp;The missile was named after the port city of Khorramshahr near the Iraqi border, the site of one of&nbsp;the&nbsp;most pivotal battles of modern Iranian history in which the&nbsp;country's&nbsp;Revolutionary Guard Corps evicted a large Iraqi force and repulsed a later Iraqi counterattack - capturing 19,000 prisoners of war. The&nbsp;Khorramshahr&nbsp;has&nbsp;revolutionised&nbsp;Iranian strike&nbsp;capabilities&nbsp;to a far greater extent than any other ballistic&nbsp;platform&nbsp;to enter service in recent years, with its long range and multiple warheads able to&nbsp;devastate&nbsp;targets across the entire&nbsp;Middle&nbsp;East and well beyond. The derivative of the missile manufactured for Iranian service has&nbsp;reportedly&nbsp;been modified from the Korean original, and retains a shorter range than its predecessor at between 2000km and 2500km.&nbsp;According to&nbsp;Iranian Revolutionary Guard Corps Commander of the Aerospace Division, Brigadier General Amir Ali Hajizadeh, the Iranian derivative of the Musudan “has become smaller in size and more tactical” which may&nbsp;partly explain the missile’s decreased range.The Khorramshahr's decreased range relative to the Musudan could have a number of explanations, one being that the Iranian armed forces announced a decreased range to avoid alarming European leaders with whom they at the time sought rapprochement, with a 2500km missile leaving most major European capitals out of range if deployed from central Iran. A second theory is that Iran's primary focus on targeting regional rather than extra regional forces, namely Israel, Arab Gulf States and U.S. and European offensive assets in the region, led the country to request a modified variant of the Musudan with heavier warheads but a shorter range. North Korea has previously been known to modify its ballistic to compromise either range or payload to enhance the other. Should Iran deploy a variant of the Khorramshahr retaining a comparable range to the Musudan, it would provide a highly valuable strategic deterrent against European capitals which, while non nuclear, could if fielded in large enough numbers be a key bargaining chip at a time of growing Western economic and military pressure against the country.Khorramshahr missiles currently in service were reportedly manufactured in North Korea and delivered to Iran, though whether the missile design will enter production in the Middle Eastern state itself remains to be seen. Iran has a long history of acquiring North Korean missile designs shortly after testing before purchasing full production lines for licenced manufacture - with Korean munition forming the bulk of the country's ballistic missile capability today. These include basic short ranged liquid fuel platforms such as the Hwasong-5 and Hwasong-6 from the 1980s, which entered Iranian service as the Shahab-1 and Shahab-2, to the more modern&nbsp;Fateh 110 which is reportedly derived from technologies developed for the Korean KN-02 Toksa solid fuel platform. With the ability to strike Israel highly valued by the Iranian military the Shahab-3 based on the Korean Rodong-1 - a platform designed to strike U.S. bases in Japan - was a highly valued addition to the Iranian arsenal and for the first time provided an intermediate range capability.&nbsp;The Iranian Air Force's relative lack of long range strike capabilities meant that greater value was placed on these missiles.&nbsp;The Khorramshahr is considerably more sopyhciated still than the Shahab-3 design, developed two decades later, and can deliver a considerably greater payload with improved survivability. Potential responses to the Khorramshahr's induction by Iran's potential adversaries remain manifold, but as of yet no direct response has been undertaken other than Israel's continued modernisation of its interception&nbsp;capabilities&nbsp;against long range attacks.