The Democratic People's Republic of Korea (DPRK) on Thursday urged the United States to present a realistic proposal to Pyongyang in order to resume the bilateral talks on the Peninsula issues. 

Director-General of the Department of American Affairs of the DPRK Foreign Ministry Kwon Jong Gun said in a statement that the United States is now talking much about the DPRK-U.S. dialogue while becoming desperate in its hostile acts against the DPRK. 

"The DPRK-U.S. dialogue would not open by itself though the U.S. repeatedly talks about resumption of dialogue like a parrot without considering any realistic proposal that would fully conform with the interests of both sides," the official Korean Central News Agency quoted Kwon as saying.

DPRK on Thursday warned the Republic of Korea (ROK) to stop "meddling" in talks between Pyongyang and Washington, repudiating its neighbor days before U.S. President Donald Trump arrives in Seoul amid a nuclear deadlock.

Talks have been stalled since February when a second summit between Trump and DPRK leader Kim Jong Un collapsed, after they failed to agree on what the DPRK would be willing to give up in exchange for sanctions relief. 

The two sides have had minimal contact since then and Trump is due to fly to Seoul at the weekend for a summit with ROK President Moon Jae-in. 

Moon said on Wednesday that "behind-the-scenes talks" were going on between the U.S. and the DPRK with a view to preparing for a third summit. 

"Also underway is dialogue between the ROK and the DPRK through diverse channels," he added in a written interview with a leading media. 

Seoul has also recently approved 8 million U.S. dollars in food aid for the DPRK. 

But an official at the DPRK's foreign ministry slammed the ROK on Thursday, saying it was trying to raise its standing by posing as a "mediator."

In a statement carried by the DPRK's official Korean Central News Agency, he said the U.S. and the DPRK were the "direct parties," adding: "It is absolutely not an issue where the ROK government can meddle in."

If the DPRK had to contact Washington, it can use the "already existing communication channel," he said, stressing it will "never be done through the ROK government."

"ROK officials are acting as if there are various exchanges and behind-the-scenes talks between the DPRK and ROK; there are none," he added. 

The statement also reminded Washington that it did not have "much time left" until Kim's end-of-year deadline to adopt a new approach to revive dialogue. 

Moon brokered the talks between Trump and Kim last year, and has held three summits with the DPRK leader. 

Trump's visit to Seoul had fueled media speculation over a possible trilateral summit with Kim and Moon, but Trump himself has said he will not be meeting Kim.

Trump and Kim have exchanged a total of 12 letters since the beginning of last year, the ROK's Unification Minister said, with the DPRK leader the more assiduous suitor in their nuclear bromance, penning eight.

"Since 2018, chairman Kim has written eight letters to President Trump, and President Trump has written four letters to Chairman Kim," Kim Yeon-chul, the ROK's Unification Minister in charge of inter-Korean affairs, told reporters.

"I guess those leaders recognize the importance of resuming the dialogue between the two countries as they are constantly exchanging letters."

Seoul is set to host the U.S. president this weekend as it tries to rekindle nuclear talks that have stalled since the collapse of a second summit between Trump and Kim in Hanoi in February.

Minister Kim's comments Wednesday came hours after Moon said Pyongyang and Washington were engaged in "behind-the-scenes talks" for another summit and noted the most recent exchange of letters between Trump and Kim.

On Sunday, the DPRK's state media said Kim received a personal message "of excellent content" from the U.S. president, just days after Trump said Kim had sent him a "beautiful letter."