North Korea on Wednesday described South Korean President Lee Jae-myung as a “hypocrite” following his statements about denuclearization on the Korean Peninsula, made during his visit to Washington.

Speaking Monday from the U.S. capital, where he met with President Donald Trump, Lee said the alliance between Seoul and Washington “will be strengthened” when “there is a path to denuclearization, peace, and coexistence on the Korean Peninsula,” where the North and South remain officially at war.

Since taking office in June, President Lee has stated his intention to improve relations with Pyongyang, which possesses nuclear weapons.

North Korea’s official news agency said that Lee, who “claimed he wanted to restore relations” with Pyongyang, revealed through his recent remarks “his true nature as a confrontation-obsessed hypocrite.”

It added that Lee’s reference to “denuclearization” was nothing more than a naïve dream, “like trying to catch a cloud in the sky.”

Since the failure of the 2019 summit between North Korean leader Kim Jong Un and U.S. President Donald Trump, Pyongyang has repeatedly affirmed that it will not abandon its nuclear arsenal.

During his meeting with Trump at the White House on Monday, Lee asked his counterpart—who has often boasted of his personal relationship with Kim—for help in establishing peace between the two Koreas.

In that meeting, Trump, who met Kim three times during his first term, said he hopes to hold another summit with the North Korean leader, possibly later this year.