It's already clear that the United States is at odds with Macron and others over climate change, while President Donald Trump's views on international trade, including his decisions to slap tariffs on foes and allies alike, has ruffled feathers with his closest partners.
For better or worse, bilateral sessions between the world leaders will likely be the highlights of the G7.
Trump is scheduled to hold a face-to-face session with British Prime Minister Boris Johnson, their first as leaders, just before the opening session on Sunday, with a post-Brexit trade deal in focus.
The first working group will then look at the international economy, trade and security.
Over lunch, the presidents, prime ministers and leaders of international organizations in attendance are expected to discuss global inequality. Nobel Peace Prize winners Denis Mukwege and Nadia Murad will then present on gender equality issues.
As the day winds to a close, Africa will take centre stage, with leaders from the continent in attendance.
The issues in the Sahel region of Africa, long plagued by jihadist groups, will receive special attention.
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