Hypersonic missiles are overrated in terms of speed and can be spotted by early warning systems, according to a report by US security experts that suggested their performance is roughly comparable to conventional ballistic missiles.China, Russia and the United States have all been exploring the potential of the missiles, which travel at low altitudes along a lower and flatter trajectory than intercontinental ballistic missiles to reduce the time it takes to travel from launch to impact. They…

This post was originally published on South China Morning Post.