Meanwhile, in Canada, a growing rift between the United States and its most important allies was on full display.
"I agree with him, and to have a meaningful discussion, our ministries of foreign affairs and experts should get involved and work closely together, and of course a meeting in person is necessary", Putin told reporters at the Shanghai Cooperation Organization Summit in Qingdao, China.
The point isn't that each of those deals was ideal, but to Trump they were disastrous primarily because they involved the United States joining with other countries in the hopes that everyone could emerge better off.
The shift has yielded only modest economic benefits, with Russia's two-way trade with China still less than half what it is with Europe, but it has allowed Putin to slough off his country's isolation from the West. "They should let Russian Federation come back in because we should have Russian Federation at the negotiating table".More news: Harry Kane signs new 6-year contract with Tottenham
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Trump faces his own problems with the G-7′s other members, especially over trade policy.
The Chinese president said the three countries should push the construction of the China-Mongolia-Russia economic corridor, actively explore cooperation in areas such as infrastructure interconnectivity, and promote sub-regional cooperation in adjacent areas of the three countries.
Iran's President Hassan Rouhani, whose country is an observer member, also attended the meeting as he seeks Chinese and Russian support following the United States withdrawal from the nuclear deal with Tehran.
"This used to be the G8 because Russian Federation was in it, and now Russia's not in it", Trump said outside the White House.
"Russia stands for the consistent, rigorous implementation of the JCPOA and would continue to honour all our commitments", Putin further said.
China and Russian Federation already enjoy a relatively extensive economic dialogue, which has warmed in several areas since the crisis in Ukraine that contributed to Moscow's suspension from the G8. Leaders of Italy's new populist government are known to have cultivated friendly ties to Moscow and have been vocal critics of sanctions on Russian Federation.
Putin also criticized Trump's decision to exit the Iran nuclear deal, saying the withdrawal could "destabilize the situation" in the Middle East.
Aside from the United States, the G7 consists of Canada, France, Germany, Italy, Japan, and Britain.