Cheong Seong-chang, director of the Center for North Korean Studies at the Sejong Institute, told the network that North Korea “will need at least two or three more test launches in the future to complete its hypersonic missile.”
Joshua Pollack, senior research associate at the Middlebury Institute of International Studies in California, said this week that while North Korea is claiming the weapon is hypersonic, “that doesn’t mean it’s a novel sort of weapon.”