United States - South Korean Foreign Minister Yun Byung-Se on Wednesday urged the UN Security Council to threaten North Korea with "the most serious consequences" if it refuses to stop conducting nuclear tests.
North Korea has recently been testing the engine for an inter-continental ballistic missile amid concerns it is preparing a fourth nuclear test, with recent satellite images showing increased activity at its main nuclear test site.
"We must clearly warn North Korea that if it challenges the international community with another nuclear test it will be met with the most serious consequences," the minister said.
Pyongyang has already conducted nuclear tests in October 2006, May 2009, and February 2013, despite bans by the United Nations and increased international sanctions.
"Further nuclear tests by North Korea must be prevented through concerted efforts of the international community," Yun added.