WASHINGTON — The United States conducted a missile-defense test on Wednesday off the coast of Hawaii and intercepted a medium-range ballistic missile, just days after North Korea’s bold missile test over Japan. 

The missile test on Wednesday was conducted by the United States Missile Defense Agency and Navy sailors on the John Paul Jones, a guided-missile destroyer. 

“We are working closely with the fleet to develop this important new capability, and this was a key milestone,” in advancing the capability to intercept missiles, said Lt.  Gen. Sam Greaves, the director of the Missile Defense Agency, which is part of the Defense Department. “ We will continue developing ballistic missile-defense technologies to stay ahead of the threat as it evolves.” 

Tensions between the United States and North Korea have been rising in recent months over Pyongyang’s development of its nuclear program.