South Korea's foreign ministry emphasised its efforts to reopen communication with Pyongyang to ease tensions, without directly commenting on Trump's letter South Korea's Ministry of Foreign Affairs said on Thursday it is working closely with the United States to revive dialogue with North Korea,

North Korean leader Kim Jong Un said that it is an unshakable will of the government and of my own steadfastly to carry on the Korea-Russia relations

Trump "remains receptive" to reengaging with South Korean strongman Kim Jong Un, White House spokesperson Karoline Leavitt said.