The summit itself, with leaders from France, Russia and Saudi Arabia among those attending, has been struggling to carve out any accord on fighting climate change while hot-button disputes such as Ukraine loom large.
Trump counted a victory Friday for his brash trade stance as the United States, Canada and Mexico signed a new trade deal, a successor to the North American Free Trade Agreement.
"We have outlined our position and the very timeline of events". All of a sudden, the soon-to-be Democratic-controlled House of Representatives may be forced to examine anew whether Trump lied his way into high office-a potentially impeachable offense-and whether he is obstructing justice by refusing to appoint a new attorney general after he dismissed Jeff Sessions and removed oversight of the special counsel's Russian Federation investigation from Deputy Attorney General Rod Rosenstein.
The expert also added that "in essence, President Trump, I don't think he's ready as a leader to be able to cooperate with someone like Mr. Putin".
Trump had been scheduled to meet with Putin on December 1 for talks that the Kremlin had said could last two hours - the first major meeting between the two since a summit in Helsinki in July, after which he faced criticism for seeming to accept Putin's assertion that Moscow did not meddle in the election that he won in 2016.
Ukraine said its soldiers were injured after a Russian border guard vessel allegedly rammed into one of its tugboats in the Kerch Strait, a narrow body of water that gives access to the Sea of Azov and is used by both nations. He said he would wait for the results of a report from his national security team before deciding.
For Trump, there was no escape from the lengthening shadow of the USA investigation over Russian meddling in his 2016 election, which is now reaching into his business affairs.
"It is regrettable that we can't succeed in holding a full-scale meeting, which is long due", Putin said, adding that issues of strategic stability would be of paramount importance.
If that was created to soothe Trump, Xi more generally urged his fellow G20 leaders "to stick to openness" and to "steer (the) world economy responsibly", Xinhua reported. However, the restoration of NAFTA was in Trump's presidential election campaign and during the times of negotiation, Trump threatened to tear up the pact and to withdraw the U.S. completely this time in G20 summit.
Evidently the White House realized on Thursday that the optics of a Putin meeting, coming at a time when Trump was already accused of being soft on Putin and the Russian Federation investigation was re-energized, would be a public relations disaster.
Saudi Crown Prince Mohammed bin Salman has talked with world leaders at a Group of 20 summit clouded by concerns about the gruesome killing of Saudi journalist Jamal Khashoggi.