PYONGYANG, May 6, 2016 -- Photo taken on May 6, 2016 shows the April 25 House of Culture, where the 7th Congress of the Workers' Party of Korea (WPK) is held in Pyongyang, capital of the Democratic People's Republic of Korea (DPRK). The Workers' Party of Korea , DPRK's ruling party, opened its 7th Congress on Friday. It is the first WPK congress in 36 years and the first under the leadership of Kim Jong Un. (Xinhua/Guo Yina)

PYONGYANG, May 8 -- Top leader of the Democratic People's Republic of Korea (DPRK) Kim Jong Un said that the DPRK, as a responsible nuclear weapons state, will strive for world denuclearization and faithfully fulfill obligations of nuclear non-proliferation, state media KCNA reported.

Kim emphasized that the DPRK, as it has already made clear, will not resort to nuclear weapons first unless its sovereignty is encroached upon by any aggressive hostile forces with nukes, the report said.

He made the remarks when he delivered a report on the work of the Central Committee of the ruling Workers' Party of Korea (WPK) at the party's 7th Congress.

Kim stressed that the WPK has worked hard for the implementation of the strategic line of pushing forward economic growth and nuclear development at the same time, which was required by the prevailing situation and the revolutionary cause.