Iran fired a missile at a remote Indian Ocean island. Now much of the world is worried

These missiles have ranges of up to 2,000km, which means they can reach Israel directly from Iran.Scaling up from short-range to medium-range to intermediate requires larger and larger rockets, which presents a number of increasingly difficult technical challenges The simplest modification to extend a missile’s range is to reduce its payload.Iran has reportedly demonstrated this with the Khorramshahr, using a smaller warhead that gives it a range of 3,000km