(CNN) Hopes for a third summit between North Korean leader Kim Jong Un and US President Donald Trump appeared to be revived Wednesday even after Pyongyang rebuked Washington over "hostility" that "viciously slandered" the country.

The North Korean Foreign Ministry accused the US of engaging in "extreme hostile acts" against their country, specifically calling out Secretary of State Mike Pompeo but sparing Trump from their criticism.

Yet just hours after the statement published, South Korean President Moon Jae-in revealed that the long-time adversaries had been talking "behind the scenes" and "engaged in dialogue in regard to a third summit."

"There's no reason to regard the current situation as a stalemate in the peace process on the peninsula just because the pace has remained slow," Moon said in a written question-and-answer session with several media outlets.

"Complete denuclearization and a permanent peace regime on the peninsula are tasks that cannot be achieved overnight."

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