South Korean President Moon Jae-in and Chinese Premier Li Keqiang agreed Wednesday to continue working together to peacefully resolve the North Korean nuclear issue and establish peace on the Korean Peninsula.
Strengthening trilateral cooperation, Li said, not only meets the needs of the three countries, but also accords with the expectations of the region and the global community at large.
In late March, Kim made a surprise visit to Beijing and held talks with Xi, his first known trip overseas since he assumed power in 2011.
"The momentum of the complete denuclearisation of the Korean Peninsula and peace and stability in North-East Asia has to be led to North Korea's concrete actions, " Abe said after the meeting. Moon said the three countries agreed to highlight unity as the two Koreas moved towards a permanent peace settlement.
Moon, who took office a year ago, is the first South Korean president in seven years to travel to Japan.
Japan has by far the hardest line of the three countries on North Korea, and has found itself largely watching from the sidelines as the diplomatic frenzy unfolds.
During a surprise trip to China this week, North Korean leader Kim Jong Un told Chinese President Xi Jinping that his country would abandon its nuclear weapons in the absence of a security threat, China's state-run Xinhua News Agency reported Tuesday.
Abe said he is "looking forward to visiting China (again) at an appropriate time" following a request from Li.
The South Korean president asked for China's continued support, especially for the upcoming North Korea-U.S. summit that he earlier said may decide how and when North Korea will give up its nuclear ambition.
Trump's trade pressure on China and Japan, the world's second and third-largest economies, appeared to have had an impact as Li urged swifter discussions on regional free trade deals, such as a Regional Comprehensive Economic Partnership backed by Beijing.
After their talk, Abe and Li oversaw the signing of an agreement to set up a security hotline to defuse possible maritime incidents that could spark tensions.
"Xi was originally sanguine about getting along with Trump, but the recent tariff move, which came as a surprise for him, awakened him to the reality that China has to fight America after all, and that it has to fix ties with Japan and embrace it under its wing", said Noriyuki Kawamura, a professor of Sino-Japanese relations at the Nagoya University of Foreign Studies.