The Pentagon revealed last year that such weapons were at least under consideration. Hypersonic missiles are widely seen as a weapon of the future. The United States is developing its own, with the Air Force’s ARRW hypersonic missile failing its first test earlier this month. A recent report stated that the U.S. military is working on seventy different hypersonic weapon efforts, for which it has requested $15 billion in funding. ARRW stands for Air-Launched Rapid Response Weapon, and it has been described as “a boost-glide type hypersonic missile that is supposed to reach Mach 20 speeds before it glides to its target.” However, the ARRW’s first test launch failed earlier this month.