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BERLIN, GERMANY - JULY 06: German Chancellor Angela Merkel welcomes King Willem-Alexander of the Netherlands and Queen Maxima of the Netherlands to the German Chancellery on July 06, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Maja Hitij/Getty Images)

BERLIN, GERMANY - JULY 06:  German Chancellor Angela Merkel welcomes King Willem-Alexander of the Netherlands and Queen Maxima of the Netherlands to the German Chancellery on July 06, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Maja Hitij/Getty Images)

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BERLIN, GERMANY - JULY 06: German Chancellor Angela Merkel welcomes King Willem-Alexander of the Netherlands and Queen Maxima of the Netherlands to the German Chancellery on July 06, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Maja Hitij/Getty Images)

BERLIN, GERMANY - JULY 06:  German Chancellor Angela Merkel welcomes King Willem-Alexander of the Netherlands and Queen Maxima of the Netherlands to the German Chancellery on July 06, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Maja Hitij/Getty Images)

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BERLIN, GERMANY - JULY 06: King Willem-Alexander of The Netherlands and Queen Maxima of The Netherlands visit the Chancellor of Germany Angela Merkel at the Bundeskanzleramt on July 6, 2021 in Berlin, Germany. Their Majesties are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Patrick van Katwijk/Getty Images)

BERLIN, GERMANY - JULY 06:  King Willem-Alexander of The Netherlands and Queen Maxima of The Netherlands  visit the Chancellor of Germany Angela Merkel at the Bundeskanzleramt on July 6, 2021 in Berlin, Germany. Their Majesties are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Patrick van Katwijk/Getty Images)

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BERLIN, GERMANY - JULY 06: King Willem-Alexander of the Netherlands and Queen Maxima of the Netherlands chat with German Chancellor Angela Merkel on a terrace of the Chancellery on July 06, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Sean Gallup/Getty Images)

BERLIN, GERMANY - JULY 06:  King Willem-Alexander of the Netherlands and Queen Maxima of the Netherlands chat with German Chancellor Angela Merkel on a terrace of the Chancellery on July 06, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Sean Gallup/Getty Images)

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BERLIN, GERMANY - JULY 06: King Willem-Alexander of The Netherlands and Queen Maxima of The Netherlands visit the Chancellor of Germany Angela Merkel at the Bundeskanzleramt on July 6, 2021 in Berlin, Germany. Their Majesties are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Patrick van Katwijk/Getty Images)

BERLIN, GERMANY - JULY 06: King Willem-Alexander of The Netherlands and Queen Maxima of The Netherlands visit the Chancellor of Germany Angela Merkel at the Bundeskanzleramt on July 6, 2021 in Berlin, Germany. Their Majesties are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Patrick van Katwijk/Getty Images)