According to Japan’s Yomiuri newspaper, Japan and the United States will agree this week to cooperate and build an interceptor missile to counter hypersonic weapons created by China, Russia, and North Korea. The agreement on interceptors to target weapons designed to bypass existing ballistic missile defences is expected when President Joe Biden meets Japanese Prime Minister Fumio Kishida in the United States on Friday, according to the article, which did not provide a source. Outside of business hours, officials from Japan’s Ministry of Foreign Affairs could not be reached for comment. Hypersonic projectiles can vary course, making them more difficult...