WASHINGTON (Sputnik) — Pyongyang confirmed earlier in the day that it had tested a nuclear warhead at its northeastern nuclear test site. The experiment was its fifth nuclear test and the largest ever performed by North Korea.
"The United States intends to work with UN Security Council partners to take robust steps in response to this provocation," Kerry stated.
Kerry declared the overnight test a flagrant violation of UN Security Council Violations against North Korea’s nuclear program.
The test, North Korea's fifth and most powerful nuclear experiment so far, was registered by monitoring services as having caused a moderate earthquake.