To this end, the two countries agreed to strengthen their strategic dialogue.
The aircraft carrier USS Ronald Reagan maneuvers along the waters east of the Korean Peninsula prior to a scheduled port visit in Busan, Republic of Korea in this October 21, 2017 handout photo.
"The future of this region and its handsome people must not be held hostage to a dictator's twisted fantasies of violent conquest and nuclear blackmail", he said during a speech in Vietnam at the annual Asia Pacific Economic Cooperation (APEC) forum.
The two leaders last met in Berlin in July before the Group of 20 summit in Hamburg, Germany.
Xi was quoted as saying it would be "new beginnings and a good start" by Yoon. "I totally feel the same way", Abe told reporters.
"The exercise is aimed at enhancing deterrence against North Korea's nuclear and missile threats and showing off preparedness to fend off any provocative acts by the North", a ministry spokesman said.
"While welcoming the agreement released October 31, the two leaders agreed to quickly put the countries' exchange and cooperation in all areas back on the normal track", Moon's chief press secretary Yoon Young-chan told a press briefing.
In recent months, North Korea has tested intercontinental ballistic missiles that could reach the US mainland with further development and has conducted its most powerful nuclear test.
Speaking about North Korea, Trump accused the nation of defying pacts and said, "The North Korean regime has pursued its nuclear & ballistic missile programs in defiance of every assurance, agreement, & commitment it has made to the US and its allies".
However, the meeting was followed by a brief commotion following a Chinese news report. Cheong Wa Dae responded to the report by saying that the comment was within the boundaries of the joint statement from South Korean and Chinese foreign ministries on October 31.
Trump had also delivered a sharp warning to North Korea in a speech at South Korea's parliament on Wednesday, telling the country: 'Do not underestimate us.