Which country has tested an air-breathing hypersonic weapon capable of speeds faster than five times the speed of sound?

Which country has tested an air-breathing hypersonic weapon capable of

1.	Which country has tested an air-breathing hypersonic weapon capable of speeds faster than five times the speed of sound?
Answer» The United States has tested an air-breathing hypersonic weapon capable of speeds faster than five times the speed of sound, marking the first successful test of the class of weapon since 2013.