China is North Korea's main trading partner, making Beijing's cooperation essential to the success of sanctions aimed at stopping the North's pursuit of weapons technology.
Moon's proposal to meet with ruling and opposition party leaders also follows his trip to the United Nations General Assembly last week, where he called for worldwide efforts to put maximum pressure on the reclusive North so the country will have no choice but to come to the dialogue table to discuss its voluntary and complete nuclear dismantlement.
In a press conference yesterday in Beijing, Chinese Foreign Ministry spokesman Lu Kang said sides "hope to understand that war is not a way out" of USA and North Korean officials' statements about "war on Korean Peninsula".
Trump tweeted at the weekend that North Korea's leadership "won't be around much longer" if it keeps up its threats.
North Korea appears to have boosted defenses on its east coast, South Korea's Yonhap news agency said Tuesday, after North Korea said U.S. President Donald Trump had declared war and that it would shoot down U.S. bombers flying near the peninsula.
The Trump administration on Tuesday announced new sanctions against North Korean banks. "Breaking the deadlock requires all relevant parties to show their sincerity".
Trump repeated praise he offered last week for China's reported breaking off of banking relations with North Korea.
Chinese leaders argue against doing anything that might hurt ordinary North Koreans.
They also ban sales of natural gas to North Korea and purchases of the North's textile exports, another key revenue source.
Beijing has responded by voting in favor of increasingly harsh United Nations resolutions over North Korea's nuclear and missile development programs and announced Saturday that it will limit energy supplies to North Korea and stop buying its textiles as dictated by the latest sanctions.
South Korea on Tuesday insisted that Seoul and the United States remain committed to their joint objective of a "complete nuclear dismantlement [of North Korea] in a peaceful manner".
China also has banned imports of North Korean coal, iron and lead ore, and seafood since early September. China is estimated to account for roughly 90% of North Korea's foreign trade, with money and goods flowing back and forth across a land border that runs for 880 miles.
On Thursday, the Ministry of Commerce defended its recent imports of North Korean coal, saying they were permitted by United Nations sanctions.