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North Korea willing to discuss denuclearization with U.S., South Korea says

South Korea says North Korea has agreed to impose a moratorium on tests of nuclear weapons and missiles if it holds talks with the United States.

South Korea's presidential national security director said Tuesday that North Korea said it's ready to have "heart-to-heart" talks with the United States on issues regarding the North's potential denuclearization and the normalization of relations between Pyongyang and Washington. South Korea says it has agreed with North Korea to hold summit talks in late April.

He said the North also made it clear that it wouldn't need to keep its nuclear weapons if military threats against the country are resolved and it receives a security guarantee.

He said the North also promised not to use conventional or nuclear weapons against South Korea.

South Korea's presidential office also said Tuesday that the countries have agreed to set up a telephone hotline between their leaders. And the country's presidential national security director, Chung Eui-yong, said North Korea has also made it clear that it wouldn't need to keep its nuclear weapons if military threats against the country are resolved and it receives a credible security guarantee.

The comments were made after South Korean officials returned from a visit to the North, where they met with North Korean leader Kim Jong Un.