Soraya Sarhaddi Nelson

On Thursday, Hamburg became the first city in Germany to ban diesel vehicles on its streets — at least in part. But many Germans question whether the limited ban is an environmental milestone, as the city claims, or a political shell game that will ultimately create more pollution.

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ARI SHAPIRO, HOST:

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MARY LOUISE KELLY, HOST:

Germany waited nearly 16 months for the Trump administration to send a new ambassador to Berlin. But Richard Grenell managed to offend many Germans the day he arrived by posting this note on Twitter:

"As @realdonaldtrump said, US sanctions will target critical sectors of Iran's economy. German companies doing business in Iran should wind down operations immediately."

For Germans, Friday's working session between President Trump and Chancellor Angela Merkel at the White House proved unexpectedly cordial and, at times, odd.

The chancellor, who is usually reserved, looked surprised when Donald Trump greeted her with a kiss on each cheek, a move the president seemed to have picked up from the French during the first state visit by France's president, Emmanuel Macron, earlier this week.

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