The annual Group of 20 summit meeting, which brings together President Donald Trump and other world leaders, is intended to foster global economic cooperation. But with so many top officials in one place, it also serves as an all-purpose jamboree of non stop formal and informal diplomatic activity.

This year's meeting takes place in Osaka, Japan, on Friday and Saturday, and the official agenda includes trade, artificial intelligence, women's empowerment and climate change. If the members can reach consensus on those subjects and others, they will produce an official joint declaration at the end.

That might not be easy: President

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What is the G-20?

What is the G-20 summit?

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What happens at a G-20 summit?

What will be on this year's agenda?

What is Trump expected to do?