MOSCOW (Sputnik) — On September 9, Pyongyang carried out a nuclear test at its northeastern nuclear test site.
"This is an expression of confidence in the fact that the country has basically completed the study, the development of nuclear weapons," the statement obtained by RIA Novosti reads.
The embassy said that the last nuclear test verified characteristics of nuclear warheads for North Korea's army.
"We will continue to take measures for the qualitative and quantitative buildup of North Korea's nuclear forces, designed to protect the country's dignity, the right to exist and peace in the light of the increasing US threat," the statement reads.
Earlier in the day, Russian Permanent Representative to the International Organizations in Vienna Vladimir Voronkov said that North Korea's statement regarding the completion of its development of nuclear weapons indicated it would no longer conduct nuclear tests that have been raising concerns worldwide.
"[Russia still] believes that Pyongyang will revert to the non-proliferation regime, and it would be a responsible step by North Korea," Voronkov said.
North Korea has been under pressure from the international community since its January nuclear test and a long-range rocket launch in February, which resulted in tightening sanctions against Pyongyang in the new UN Security Council resolution in March.