Trump, who attended the day one of the summit pitched the idea of discarding all tariffs and trade barriers between the U.S. and its G-7 allies.
M - A viral photo of Angela Merkel and other world leaders standing over a seated Donald Trump at Friday's G7 summit has been given the meme treatment on social media, with social media users quick to liken the image to everything from renaissance art to a scene from the Apprentice.
Trans-Atlantic and other trade wars would have "a long-term impact on the global economy", he said at a Berlin meeting with German Chancellor Angela Merkel and leaders of the IMF, World Bank and other worldwide institutions.
Others, however, insisted that Trump looks like he's in control of the situation in the photo.
"He learned", Trump said.
Expectations for a breakthrough at the summit, however, are low, with US allies focused on avoiding rupturing the G7, which in its 42-year history has tended to seek consensus on major issues.
Trump was attending the G7 Summit in Canada, but left the meeting early announcing via a tweet "that he was backing out of the joint communique".
Canada also plans to impose similar taxes on steel and aluminum imports from the USA, as well as levy taxes on such goods as whiskey, orange juice and other food products in addition to that. Highlighting that the document is still "legally-binding" as far as Germany is concerned, Merkel said she would uphold it but her patience after Trump's about-face had worn thin.
The G7 nations are Canada, France, the United States, the United Kingdom, Germany, Japan and Italy. In the run-up to the G7 summit, Trump continued to rile up his fellow world leaders with accusations of unfair trade practices, provoking angry responses from both Trudeau and French President Emmanuel Macron, who even suggested that the G7 could fare as the G6, without the U.S. if need be.
"There is no reason for us not to talk to each other, but this is going to be hard", Merkel said, adding that her dialogue with Trump will continue during the North Atlantic Treaty Organisation summit in Brussels in July.
Germany, Europe's top economy, finds itself in the sights of the United States president due to its large trade surplus and defense spending criticized as too low. Asked by reporters whether he would relent on tariffs, Trump looked at Merkel and said: "I don't know".
Another image of the same gathering however suggests a more relaxed interaction, with Merkel smiling and Trump making eye contact.