Shenzhen, China. 25 May 2018, China, Shenzhen: German Chancellor Angela Merkel of the Christian Democratic Union (CDU) takes a tour of the company Siemens Shenzhen Magnetic Resonance LTD, alongside Siemens CEO Joe Kaeser (c). The company's general manager Pan Huaiyu (l) shows his visitors an MRI scanner. Merkel is in China for a two-day state visit. Photo: Michael Kappeler/dpa Credit: dpa picture alliance/Alamy Live News
RMMR0YHBShenzhen, China. 25 May 2018, China, Shenzhen: German Chancellor Angela Merkel of the Christian Democratic Union (CDU) takes a tour of the company Siemens Shenzhen Magnetic Resonance LTD, alongside Siemens CEO Joe Kaeser (c). The company's general manager Pan Huaiyu (l) shows his visitors an MRI scanner. Merkel is in China for a two-day state visit. Photo: Michael Kappeler/dpa Credit: dpa picture alliance/Alamy Live News
FILE - An archive picture dated 10 July 2014 shows German Chancellor Angela Merkel (CDU) during a press conference in Berlin, Germany. Photo: Maurizio Gambarini/dpa
RMF6NPP0FILE - An archive picture dated 10 July 2014 shows German Chancellor Angela Merkel (CDU) during a press conference in Berlin, Germany. Photo: Maurizio Gambarini/dpa
(dpa) - The picture shows chairwoman of the Conservatives (CDU) and desgnated German Chancellor Angela Merkel in Berlin, Germany, 10 October 2005. Photo: Felix Heyder
RMD3M07F(dpa) - The picture shows chairwoman of the Conservatives (CDU) and desgnated German Chancellor Angela Merkel in Berlin, Germany, 10 October 2005. Photo: Felix Heyder
FILE - An archive picture, dated 18 September 2005, shows German Chancellor Angela Merkel (CDU) casting her ballot during parliamentary election in Berlin, Germany. Photo: Peer Grimm/dpa
RMF6NRA9FILE - An archive picture, dated 18 September 2005, shows German Chancellor Angela Merkel (CDU) casting her ballot during parliamentary election in Berlin, Germany. Photo: Peer Grimm/dpa
FILE - An archive picture, dated 15 Oktober 2015, shows German Chancellor Angela Merkel (CDU) speaking during a parliamentary debate at the Bundestag in Berlin, Germany. Photo: Kay Nietfeld/dpa
RMF6NPYHFILE - An archive picture, dated 15 Oktober 2015, shows German Chancellor Angela Merkel (CDU) speaking during a parliamentary debate at the Bundestag in Berlin, Germany. Photo: Kay Nietfeld/dpa
FILE - An archive picture, dated 11 September 2015, shows German Chancellor Angela Merkel (CDU) during a festive event at Schloss Bellevue in Berlin, Germany. Photo: Michael Kappeler/dpa
RMF6NPP4FILE - An archive picture, dated 11 September 2015, shows German Chancellor Angela Merkel (CDU) during a festive event at Schloss Bellevue in Berlin, Germany. Photo: Michael Kappeler/dpa
FILE - An archive picture dated 16 July 2014, shows German Chancellor Angela Merkel (CDU) during a government cabinet meeting at the chancellery in Berlin, Germany. Photo: Wolfgang Kumm/dpa
RMF6NPNYFILE - An archive picture dated 16 July 2014, shows German Chancellor Angela Merkel (CDU) during a government cabinet meeting at the chancellery in Berlin, Germany. Photo: Wolfgang Kumm/dpa
(FILE) The file picture dated 05 April 2011 shows German Chancellor Angela Merkel (CDU) walking on crutches to a reception for volunteer workers in Berlin, Germany. Photo: Tobias Kleinschmidt/dpa
RMDNW8DE(FILE) The file picture dated 05 April 2011 shows German Chancellor Angela Merkel (CDU) walking on crutches to a reception for volunteer workers in Berlin, Germany. Photo: Tobias Kleinschmidt/dpa
FILE - An archive picture, dated 15 Oktober 2015, shows German Chancellor Angela Merkel (CDU) speaking during a parliamentary debate at the Bundestag in Berlin, Germany. Photo: Bernd von Jutrczenka/dpa
RMF6NPYRFILE - An archive picture, dated 15 Oktober 2015, shows German Chancellor Angela Merkel (CDU) speaking during a parliamentary debate at the Bundestag in Berlin, Germany. Photo: Bernd von Jutrczenka/dpa
FILE - An archive picture dated 25 July 2015 shows German Chancellor Angela Merkel (CDU, L) signing her autograph during the opening of the Bayreuth Festival in Bayreuth, Germany. Photo: Tobias Hase/dpa
RMF6NT57FILE - An archive picture dated 25 July 2015 shows German Chancellor Angela Merkel (CDU, L) signing her autograph during the opening of the Bayreuth Festival in Bayreuth, Germany. Photo: Tobias Hase/dpa
FILE - An archive picture dated 17 July 2014, shows German Chancellor Angela Merkel (CDU) during her 60th birthday celebration at the Konrad-Adenauer house in Berlin, Germany. Photo: Soeren Stache/dpa
RMF6NPP2FILE - An archive picture dated 17 July 2014, shows German Chancellor Angela Merkel (CDU) during her 60th birthday celebration at the Konrad-Adenauer house in Berlin, Germany. Photo: Soeren Stache/dpa
FILE - An archive picture dated 8 June 2015 shows German Chancellor Angela Merkel (CDU, R) welcoming  US president Barack Obama to the  G7 meeting in Kruen, Germany. Photo: Tobias Hase/dpa
RMF6NW9AFILE - An archive picture dated 8 June 2015 shows German Chancellor Angela Merkel (CDU, R) welcoming US president Barack Obama to the G7 meeting in Kruen, Germany. Photo: Tobias Hase/dpa