The launch of a weapon from an undisclosed location in North Korea is seen in this undated photo provided April 17, by the North Korean government. The North said it has successfully test-launched a newly developed tactical guided weapon. The United States' objective remains the complete denuclearization of the Korean Peninsula, a State Department spokesperson said Tuesday. AP-Yonhap

The United States' objective remains the complete denuclearization of the Korean Peninsula, a State Department spokesperson said Tuesday, despite North Korea's pledge to further strengthen its nuclear capabilities.

Ned Price also reiterated the U.S. holds no hostility toward the North, urging the reclusive country to return to dialogue.

"Our goal remains the complete denuclearization of the Korean Peninsula," the department press secretary said in a briefing.

The remarks come after North Korean leader Kim Jong-un said his country will work to strengthen its nuclear capabilities at the "fastest possible speed."

Kim made the remarks during a massive military parade held in Pyongyang, Monday, (KST) where the North showcased a wide range of weapons of mass destruction, including a new "giant" intercontinental ballistic missile, known as the Hwasong-17.

"We are aware of what he (Kim) said. It reiterates our assessment that the DPRK constitutes a threat to international peace and security and to the global nonproliferation regime," Price said.

His view was echoed by a spokesperson for the U.S. Department of Defense (DoD), who said the U.S. will adopt an approach that works while dealing with North Korea.

"The DoD and U.S. government will assess the threat North Korea poses and adopt an approach that works in close coordination with allies and partners to address it," the department spokesperson told Yonhap News Agency in an emailed response to questions regarding the North Korean leaders' remarks.