A senior North Korea diplomat urged the United States to accept Pyongyang's proposal to halt joint U.S.-South Korea military exercises in exchange for the North's suspension of nuclear tests, saying "many things" will be possible if the offer is realized.

After calling a news conference, the North's deputy ambassador to the United Nations, An Myong-hun, also told reporters that the North is ready to provide the U.S. with additional explanations about the proposal, such as the intention behind the offer.

"If this proposal is put into practice this year, many things will be possible," An said without elaborating.

The North disclosed the offer Saturday, saying it delivered the proposal to the U.S. a day earlier. Washington has immediately rejected the proposal as an "implicit threat" and urged Pyongyang to live up to its denuclearization commitments.

An said the rejection means the U.S. intends to maintain its "hostile" policy toward the North.

The diplomat also reiterated the North's denial of responsibility for the hacking attack on Sony Pictures.

The U.S. has determined the North was behind the hack and imposed new sanctions on the communist nation. (Yonhap)