Seoul has called on Washington and Pyongyang to reach a tentative deal in their nuclear talks to maintain the momentum for dialogue amid rising tensions on the Korean Peninsula, according to Yonhap. 

"In order to keep the situation from deteriorating and revive the momentum for negotiations, we need an interim deal as a stepping stone to a final agreement, a wisdom of modus vivendi," Kim Yeon-chul, Unification Minister of the Republic of Korea (ROK), said at a press conference on Thursday.

The Democratic People's Republic of Korea (DPRK) is expected to hold a plenary meeting of the ruling Workers' Party later this month to decide on "crucial issues," spurring speculations of a possible policy shift on talks with the United States.

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Since the second summit between U.S. President Donald Trump and DPRK leader Kim Jong Un collapsed without a deal in late February, talks between the two sides have largely stalled due to differences on denuclearization and sanctions. 

The DPRK has set a year-end deadline for the U.S. to come up with an acceptable proposal for their talks, threatening to take a "new way" otherwise.

Amid concerns about the escalation of tensions, a U.S. maritime patrol plane made a late-night flight over the peninsula on Thursday, aviation tracker Aircraft Spots said Friday.

In an interview on Monday, Chinese State Councilor and Foreign Minister Wang Yi underscored a "new round of tensions" on the peninsula, urging the U.S. to address "legitimate concerns of the DPRK." 

"China calls on the U.S. to take concrete steps as soon as possible to deliver what has been agreed in Singapore," Wang said, referring to the U.S.-DPRK joint statement reached at the Singapore summit between Trump and Kim in June 2018.

China and Russia jointly put forward a draft resolution on the political settlement of the Korean Peninsula issue to the United Nations Security Council earlier this month, urging the U.S. and the DPRK to continue dialogue and calling to the resumption of the Six-Party Talks involving the DPRK, the ROK, the U.S., China, Russia and Japan. 

The draft resolution also proposes lifting some of the sanctions on the DPRK in light of the country's compliance with relevant resolutions.

"The window of opportunity for peace is once again shifting, and the chances for dialogue quickly fading," Wang said during the interview. "It is under such circumstances that China and Russia assumed responsibilities and tabled a draft resolution at the UN Security Council, which is aimed to maintain the momentum of political resolution for the nuclear issue and prevent the situation from deteriorating or even spiraling out of control."