Ever since the summit meeting between the North’s leader, Kim Jong-un, and President Trump in Hanoi, Vietnam, late last month abruptly ended without a deal, North Korea has ceaselessly urged South Korea to distance itself from the United States and to push ahead with joint economic projects that have been held back by American-led United Nations sanctions…

President Moon Jae-in of South Korea remains eager to boost inter-Korean economic ties, raising fears at home and abroad that he may steer his government away from international efforts to enforce sanctions against the North. But in reality, Mr. Moon’s hands are tied unless the United States and North Korea reach an agreement on denuclearizing the North and Washington helps to ease sanctions.

On Saturday, DPRK Today, a North Korean government-run website, accused Mr. Moon’s government of reneging on its promise to improve inter-Korean ties and giving priority to “cooperation with a foreign force” over “cooperation among the Korean nation.”