South Korean President Lee Myung-bak commemorated Saturday's Memorial Day stating that the nation will not cave in to North Korea's threats, following its defiant nuclear test and intimidation of attack.
"I would like to make it clear that there will be no compromise against things that threaten our people and security," Yonhap reported citing Lee as saying.
Lee's stern message comes as the United Nations Security Council as well as South Korea and Japan were debating sanctions on North Korea for conducting the nuclear test on May 25.
North Korea's most recent test is believed to have been more powerful than its first test conducted in 2006, prompting the U.N. Security Council to start work on drafting stronger punitive sanctions against the recalcitrant communist regime.
In his memorial speech, Lee also called on North Korea to release a South Korean citizen, detained in the North's Gaeseong industrial enclave, "unconditionally and guarantee free business activities as promised."
North Korea has been holding a South Korean employee detained on March 30 in Gaeseong on charges of slandering the North's communist regime, without allowing any outside access to him.
About 100 South Korean companies operate inside North Korea, which was once touted as a symbol of inter-Korean reconciliation.