(CNN) President Donald Trump departs late Friday for a summit he's questioned is worth his time.

This year's G7 gathering , held in seaside France, is Trump's third. It comes amid global economic jitters, tensions from the Mideast to the Indian subcontinent and raging fires in the Amazon.

But in conversations with aides over the past weeks, Trump has questioned why he must attend, according to people familiar with the conversations. After the past two G7 summits ended acrimoniously, Trump complained about attending a third, saying he didn't view the gathering as a particularly productive use of his time.

He's made similar asides in meetings with other world leaders, including Japanese Prime Minister Shinzo Abe and French President Emmanuel Macron, who have encouraged him over the past six months to commit to attending the Biarritz summit, people familiar with the conversations said. Macron is this year's summit host.

The G7 represents the world's major economies, and has long been a regular stop on the US President's calendar. In small group sessions, with only the leaders and few aides present, the world's major economic and geopolitical problems are discussed at length.

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