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Swedish King Carl Gustaf (L) and Queen Silvia (R) receive German Chancellor Angela Merkel at the Royal Palace in Stockholm, on January 31, 2017. Merkel is on a one-day official visit to Sweden. / AFP / TT News Agency / Claudio BRESCIANI / Sweden OUT (Photo credit should read CLAUDIO BRESCIANI/AFP/Getty Images)

Swedish King Carl Gustaf (L) and Queen Silvia (R) receive German Chancellor Angela Merkel at the Royal Palace in Stockholm, on January 31, 2017.
 
 Merkel is on a one-day official visit to Sweden.  / AFP / TT News Agency / Claudio BRESCIANI / Sweden OUT        (Photo credit should read CLAUDIO BRESCIANI/AFP/Getty Images)

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Swedish King Carl Gustaf (L) and Queen Silvia (R) receive German Chancellor Angela Merkel at the Royal Palace in Stockholm, on January 31, 2017. Merkel is on a one-day official visit to Sweden. / AFP / TT News Agency / Claudio BRESCIANI / Sweden OUT (Photo credit should read CLAUDIO BRESCIANI/AFP/Getty Images)

Swedish King Carl Gustaf (L) and Queen Silvia (R) receive German Chancellor Angela Merkel at the Royal Palace in Stockholm, on January 31, 2017.
 
 Merkel is on a one-day official visit to Sweden.  / AFP / TT News Agency / Claudio BRESCIANI / Sweden OUT        (Photo credit should read CLAUDIO BRESCIANI/AFP/Getty Images)