Geert Vanden Wijngaert / AP

NATO summits are supposed to be boring. But next week’s meeting might come with more fireworks than the Fourth of July. Trump’s last big sitdown with European leaders, the G-7 in Montreal, ended with the instantly iconic photograph of Angela Merkel staring down a defiant Donald Trump, surrounded by frowning leaders doing their best to project grave concern. Acrimonious headlines are also likely to emerge next week, but they may obscure real action on significant policies. The story to watch isn’t Trump’s attempts to push other world leaders around. It’s what happens when migration politics force European leaders to reckon with growing nativism in their ranks.

—Matt Peterson

Ask A Historian

How did U.S.-Mexico border tensions begin? Rachel St. John, a professor of history at UC Davis, will join members in our forums to discuss the context behind today’s fraught border control and immigration issues. She’ll answer any questions you have on Monday, July 9, from 11 a.m. to 12 p.m. ET. Drop them here. Now, onto NATO.

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