In response to Mr Trump's decision to withhold U.S. support for the summit conclusions, a senior United Kingdom government source said: "We stand by the commitments made in the G7 communique".
The picture has since gone viral on the Internet, and Mr Trump raised it himself at the news conference after he was asked about his relationship with Canadian Prime Minister Justin Trudeau. "I don't think that ratcheting up the rhetoric is going to improve things".
The European leader-famed for negotiating compromise without political histrionics-gave an uncharacteristically candid and combative assessment of relations with Trump as she spoke to German channel ARD, after last week's G-7 summit.
The picture, snapped Saturday by German government photographer Jesco Denzel, shows a standing Merkel with her hands firmly planted on a table staring down at Trump, who is seated with his arms folded and eyes glaring.
"There are still good reasons to continue our fight [aimed at keeping close transatlantic partnership], even though we can not just rely on it anymore", she added.
European Union nations' failure to speak and act with one voice overseas is a "danger", Merkel warned, as is the fact "that we have no collective approach to the question of managing migration", vital if freedom of movement within Europe's borders is to be upheld.
Picture worth a thousand words: Trump, Merkel 'standoff' captures G-7 tensions
Despite tensions over Trump's intended trade tariffs the U.S. and its G7 allies had put on an apparent show of unity at the end of the tense summit.
German Chancellor Angela Merkel looks towards US President Donald Trump, who arrived late for the Gender Equality Advisory Council working breakfast on the second day of the G7 Summit on June 9, 2018 in Quebec City, Canada.
The acrimonious fallout from the G7 began after Mr Trump watched Mr Trudeau's end-of-summit press conference. At a press conference following the summit, Trudeau repeated his earlier description of U.S. trade tariffs as "insulting" and vowed retaliatory measures would come in July.
The US and its allies have been locked in a bitter dispute of trade tariffs and perceived trade "inequality" for quite some time. Trump's tariffs on steel and aluminum tariffs sparked tension at the meeting. The move immediately provoked an angry reaction from the European Union, which already presented its own list of American goods that will be taxed in retaliation to the United States move.
German Chancellor Angela Merkel called President Donald Trump's "withdrawal via Twitter" from the agreed-upon joint G-7 communiqué, which was co-authored by every member of the Group of Seven, "of course sobering and a little depressing" in an interview following the summit.
Other G-7 countries lobbied unsuccessfully at the summit for the U.S. to reverse its tariffs on imported steel and aluminium imports.
French farmers start refineries blockade over palm oil imports
Farm Minister Stephane Travert said on Monday the farmers' blockades were illegal and the government would not rescind the decision to allow Total to use imported palm oil.