SEOUL, May 8 (Xinhua) -- South Korea on Sunday rejected the inter-Korean dialogue offer proposed by the leader of Democratic People's Republic of Korea (DPRK) Kim Jong-un saying that the proposal is merely a propaganda drive with no authenticity as DPRK continued to develop its nuclear program.

"The North's proposal is merely its propaganda drive with no sincerity as it speaks of inter-Korean dialogue while continuing to develop a nuclear arsenal," the unification ministry of South Korea said in a statement.

Kim Jong-un made the remarks in a report delivered at a national congress of the ruling Workers' Party of Korea (WPK), the first in 36 years.

"We see the need to have dialogue and talks between the two Koreas' military officials," kim said. "If military talks are held,  they would help eliminate risks of conflict along the border and ease tension."

Seoul urged Pyongyang to give up its nuclear weapons program saying the Korean Peninsula denuclearization is the premise of a peace talk of the two sides.

"South Korea and the international community have the same stance that North Korea should not be recognized as a nuclear-powered state," the unification ministry said.

At the party gathering, Kim emphasized that his country will not resort to nuclear weapons first unless its sovereignty is encroached upon by hostile forces with nuclear weapons.

He also stressed that the WPK has worked hard for the implementation of the strategy of pushing forward economic growth and nuclear development at the same time.