World's feared Japanese hypersonic weapon costs billions.

The world of military technology values speed above all else. China and North Korea's recent displays of ballistic and hypersonic missile capabilities near Japanese waters have caused concern. In response, Japan has increased its military spending by $6.8 billion, purchased 400 new Tomahawks from the U.S., and is developing hypersonic missiles that could potentially eliminate threats from neighboring countries in a matter of seconds. It remains to be seen how this will affect the balance of power in the region.