German Chancellor Angela Merkel, a top candidate of the Christian Democratic Union Party (CDU) for the upcoming general elections reacts at the final election rally in Munich, Germany September 22, 2017. REUTERS/Michaela Rehle TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel and leader of the Christian Democratic Union party CDU stands in front of her election campaign tour bus before a CDU board meeting in Berlin September 16, 2013. Merkel's allies of the Bavarian Christian Social Union party CSU swept to victory in a state election in Bavaria on Sunday, regaining the absolute assembly majority they lost in 2008 and providing a show of conservative strength for the chancellor a week before Germany goes to the polls. REUTERS/Fabrizio Bensch (GERMANY - Tags: POLITICS ELECTIONS TPX IMAGES OF THE DAY) 

German former Chancellor Gerhard Schroeder (R) leaves after presenting flowers to Christian Democrat (CDU) leader Chancellor Angela Merkel in Berlin November 22, 2005. Merkel, 51, was elected Germany's first woman chancellor on Tuesday in a parliamentary vote that ended months of political uncertainty and puts her atop a fragile coalition that must prove it can revive the economy. She becomes Germany's eighth postwar chancellor and first to have grown up in the ex-communist east. REUTERS/Wolfgang Rattay 

Angela Merkel, German Chancellor and leader of the conservative Christian Democratic Union party (CDU) smiles as she addresses a news conference at the CDU party headquarters in Berlin September 28, 2009. Merkel's conservatives vowed on Monday to seal a coalition deal, including tax cuts, with the pro-business Free Democrats (FDP) within a month after winning Germany's election (Bundestagswahl). REUTERS/Wolfgang Rattay (GERMANY) 

German Construction Minister Angela Merkel (L) jokes with Justice Minister Sabine Leutheuser-Schnarrenberger (R) as she notices they are dressed with similar jackets prior to a weekly cabinet meeting, February 22 

A combination picture shows German Chancellor Angela Merkel folding her hands in front of her jackets of various colours during public events. It is a look back at Angela Merkel's 16-year term as Germany's chancellor ahead of the upcoming federal election in which she will no longer run as a candidate for chancellor. Pictures taken from August 2004 to September 2021. REUTERS/Staff/File Photos 

A migrant takes a selfie with German Chancellor Angela Merkel outside a refugee camp near the Federal Office for Migration and Refugees after registration at Berlin's Spandau district, Germany September 10, 2015. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

(L-R) German Chancellor Angela Merkel, Greek Prime Minister Alexis Tsipras, European Central Bank President Mario Draghi, French President Francois Hollande and European Commission President Jean Claude Juncker take part in a euro zone EU leaders emergency summit on the situation in Greece in Brussels, Belgium, July 7, 2015. Greece faces a last chance to stay in the euro zone on Tuesday when Tsipras puts proposals to an emergency euro zone summit after Greek voters resoundingly rejected the austerity terms of a defunct bailout. REUTERS/Yves Herman TPX IMAGES OF THE DAY

German Chancellor and head of the Christian Democratic Union (CDU) Angela Merkel drinks a beer after her speech in a beer tent in Munich May 15, 2013. REUTERS/Michaela Rehle (GERMANY - Tags: POLITICS TPX IMAGES OF THE DAY) 

German Chancellor Angela Merkel speaks during a session at the lower house of parliament Bundestag in Berlin, Germany, October 17, 2018. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

German Chancellor and conservative Christian Democratic Union (CDU) leader Angela Merkel gives a speech during a CDU election campaign rally in Berlin September 21, 2013. Merkel looks on track to win a third term in a weekend election in Germany but faced a battle to preserve her centre-right majority and avert a potentially divisive coalition with the centre-left.. REUTERS/Thomas Peter (GERMANY - Tags: POLITICS ELECTIONS)

German Chancellor Angela Merkel wears Google Glass eyewear as she visits a booth of Nokia where students developed an interactive communication software to repair mobile communications equipment abroad during a Girls Day career event at the Chancellery in Berlin April 27, 2016. Girls Day seeks to attract female pupils to careers in IT, technological and natural science sectors of the German industry. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel gestures during a election campaign in the western town of Soest April 26, 2010. REUTERS/Ina Fassbender (GERMANY - Tags: POLITICS ELECTIONS IMAGES OF THE DAY) 

Germany's Chancellor Angela Merkel arrives at the European Union (EU) council headquarters for an EU leaders summit discussing the EU's long-term budget in Brussels November 23, 2012. Prospects of a deal on the EU's long-term budget dimmed on Friday after a fresh compromise proposal offered concessions to France and Poland but ignored British and German demands for deeper overall spending cuts. REUTERS/Francois Lenoir (BELGIUM - Tags: BUSINESS HEADSHOT POLITICS TPX IMAGES OF THE DAY) 

Germany's Chancellor Angela Merkel gestures as she arrives for a two-day European leaders summit in Brussels June 18, 2009. REUTERS/Sebastien Pirlet (BELGIUM POLITICS IMAGES OF THE DAY) 

German Chancellor Angela Merkel waits for India's Prime Minister Narendra Modi in the Chancellery in Berlin, April 14, 2015. REUTERS/Axel Schmidt TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel is reflected in a table as she arrives for a meeting with social workers in Berlin April 30, 2009. REUTERS/Johannes Eisele (GERMANY POLITICS HEADSHOT IMAGES OF THE DAY) 

Spain's Prime Minister Jose Luis Rodriguez Zapatero (L) and German Chancellor Angela Merkel wear 3D glasses during the opening ceremony of the CeBIT computer fair in Hanover March 1, 2010. The world's largest IT fair CeBIT opens its doors on March 2 and runs through March 6. Spain is a partner country of the 2010 CeBIT. REUTERS/Fabrizio Bensch (GERMANY - Tags: BUSINESS POLITICS IMAGES OF THE DAY) 

German Chancellor Angela Merkel speaks with U.S. President Barack Obama outside the Elmau castle in Kruen near Garmisch-Partenkirchen, Germany, June 8, 2015. Leaders of the Group of Seven (G7) industrial nations vowed at a summit in the Bavarian Alps on Sunday to keep sanctions against Russia in place until President Vladimir Putin and Moscow-backed separatists fully implement the terms of a peace deal for Ukraine. REUTERS/Michael Kappeler/Pool TPX IMAGES OF THE DAY 

Germany's Chancellor Angela Merkel and U.S. President Donald Trump hold a joint news conference in the East Room of the White House in Washington, U.S., March 17, 2017. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel looks over at U.S. President George W. Bush during a news conference at his ranch in Crawford, Texas, November 10, 2007. REUTERS/Jim Young (UNITED STATES) Also see GF2DWOYBIVAA 

French President Emmanuel Macron welcomes German Chancellor Angela Merkel for a working dinner at the Elysee Palace in Paris, France, September 16, 2021. REUTERS/Gonzalo Fuentes TPX IMAGES OF THE DAY 

Britain's Prime Minister Boris Johnson gestures next to German Chancellor Angela Merkel during the G7 summit in Carbis Bay, Cornwall, Britain, June 11, 2021. REUTERS/Phil Noble/Pool TPX IMAGES OF THE DAY 

Greece's Prime Minister Alexis Tsipras (R) chats with Germany's Chancellor Angela Merkel prior to a meeting over the Balkan refugee crisis with leaders from central and eastern Europe at the EU Commission headquarters in Brussels, Belgium, October 25, 2015. REUTERS/Eric Vidal TPX IMAGES OF THE DAY

(L-R first row) Romania's President Traian Basescu, France's President Nicolas Sarkozy, (L-R second row) Vietnam's Prime Minister Nguyen Tan Dung, German Chancellor Angela Merkel and Polish Prime Minister Donald Tusk, (L-R third row), Japanese Prime Minister Naoto Kan and Finland's Prime Minister Mari Kiviniemi pose for an official photo during the Asia-Europe Meeting (ASEM) in Brussels October 4, 2010. European and Asian leaders will try to narrow differences over representation on the IMF at talks intended to break down barriers between countries representing more than half the world's population. REUTERS/Yves Herman (BELGIUM - Tags: POLITICS IMAGES OF THE DAY) FOR BEST QUALITY IMAGE: ALSO SEE GM1E7BN190X01. 

German Chancellor Angela Merkel rests her head in her hands, as she follows a debate with Labour Minister Franz Muentefering (L) at the German lower house of parliament Bundestag in Berlin June 14, 2007. Merkel warned of "grave consequences" on Thursday if the EU failed to clinch a deal on reforming its institutions, but Austria cautioned that Poland seemed determined to prevent a German-led agreement. REUTERS/Fabrizio Bensch (GERMANY) 

Russian President Vladimir Putin (R) meets with German Chancellor Angela Merkel at the Kremlin in Moscow, Russia, May 10, 2015. Putin and Merkel will discuss the crisis in Ukraine at talks in Moscow on Sunday, a Kremlin aide said on May 6. REUTERS/Sergei Karpukhin

German Chancellor Angela Merkel and British Prime Minister Theresa May address a news conference following talks at the Chancellery in Berlin, Germany July 20, 2016. REUTERS/Stefanie Loos TPX IMAGES OF THE DAY

German Chancellor Angela Merkel is welcomed by Slovakia's Prime Minister Peter Pellegrini before the summit of the Prime Ministers of the Visegrad Group and Germany in Bratislava, Slovakia, February 7, 2019. REUTERS/David W Cerny TPX IMAGES OF THE DAY 

Christine Lagarde, Managing Director of the International Monetary Fund (IMF), and German Chancellor Angela Merkel attends a news conference following a meeting of the heads of international economy and finance organizations at the Chancellery in Berlin, Germany, April 5, 2016. REUTERS/Hannibal Hanschke TPX IMAGES OF THE DAY

German Chancellor Angela Merkel fist bumps with a humanoid robot as Mexican First Lady Angelica Rivera de Pena and Mexican President Enrique Pena Nieto look on, at the booth of IBG at Hannover Messe, the trade fair in Hanover, Germany, April 23, 2018. REUTERS/Fabian Bimmer TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel and Chinese Premier Li Keqiang during news conference at the Chancellery in Berlin, Germany, June 1, 2017. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel, wearing a flak jacket, looks out of the door during her helicopter flight to the German ISAF headquarters in Masar-i-Sharif north of the Afghanistan capital Kabul November 3, 2007. Merkel made her first visit to Afghanistan on Saturday and is expected to visit some of the 3,000 German troops stationed in the country. REUTERS/Johannes Eisele/Pool 

German Chancellor Angela Merkel (R) talks to German Bundeswehr armed forces soldiers with the Alpha platoon of the 2nd paratroop company 373 during a visit to an army camp in Kunduz, northern Afghanistan, December 18, 2010. Merkel is visiting the German Bundeswehr armed forces troops with the International Security Assistance Force (ISAF) in Afghanistan. REUTERS/Fabrizio Bensch (AFGHANISTAN - Tags: MILITARY CONFLICT POLITICS) 

German Chancellor Angela Merkel looks at a combat diver during her visit to Naval Base Command in Kiel, Germany, January 19, 2016. REUTERS/Fabian Bimmer TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel, Poland's Prime Minister Mateusz Morawiecki and museum director Piotr Cywinski walk past the "Arbeit Macht Frei" gate at the former Nazi German concentration and extermination camp Auschwitz in Oswiecim, Poland, December 6, 2019. REUTERS/Kacper Pempel TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel lights a candle at the memorial of the divided city and the victims of communist tyranny during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at the Wall memorial on Bernauer Strasse in Berlin, Germany, November 9, 2019. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel walks as she attends the inauguration of memorial at the site of last year's truck attack in a Christmas market, which killed 12 people and injured many others, at Breitscheidplatz square in Berlin, Germany December 19, 2017. Picture taken with a fish-eye lens. REUTERS/Fabrizio Bensch 

German Chancellor Angela Merkel acknowledges the applause as she receives an honorary Doctor of Laws degree during the 368th Commencement Exercises at Harvard University in Cambridge, Massachusetts, U.S., May 30, 2019. REUTERS/Brian Snyder TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel drinks a dry ice cocktail designed by young students of the Junior University in Wuppertal, Germany, May 13, 2019. REUTERS/Wolfgang Rattay TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel feeds penguins at the Ozeaneum sea museum in Stralsund, May 6, 2011. Merkel adopted a female humboldt penguin at the aquarium on Friday and named it Alexandra. REUTERS/Tobias Schwarz (GERMANY - Tags: POLITICS SOCIETY IMAGES OF THE DAY ANIMALS) 

German Chancellor Angela Merkel and Britain's Queen Elizabeth smile as a robot waves during their visit at the Technical University of Berlin (TU Berlin) in Berlin, Germany June 24, 2015. Queen Elizabeth and the Duke of Edinburgh are on a three day state visit to Germany. REUTERS/Michael Sohn/Pool TPX IMAGES OF THE DAY 

Pope Francis (R) gestures as he talks to German Chancellor Angela Merkel during a private audience at the Vatican, May 18, 2013. REUTERS/Gregorio Borgia/Pool (VATICAN - Tags: RELIGION POLITICS TPX IMAGES OF THE DAY) 

U.S. President Barack Obama is welcomed by German Chancellor Angela Merkel upon his arrival at the chancellery in Berlin, Germany, November 17, 2016. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY

France's President Nicolas Sarkozy (L) gestures beside German Chancellor Angela Merkel at the start of a European Union leaders summit in Brussels March 25, 2010. France and Germany have reached a deal on a financing plan for crisis-hit Greece that will involve EU member states and the International Monetary Fund, the Elysee said on Thursday. REUTERS/Yves Herman (BELGIUM - Tags: POLITICS BUSINESS IMAGES OF THE DAY) 

German Chancellor Angela Merkel frowns as she is flanked by Hesse state Prime Minister Roland Koch (L) and German Defence Minister Franz Josef Jung (R) during an election campaign rally in Kassel September 21, 2009. Merkel, the leader of the conservative Christian Democratic Union party CDU is campaigning for Germany's general elections on Sunday September 27, 2009. REUTERS/Wolfgang Rattay (GERMANY POLITICS ELECTIONS IMAGES OF THE DAY) 

Former U.S. President Barack Obama leaves after a meeting with German Chancellor Angela Merkel at the chancellery in Berlin, Germany April 5, 2019. REUTERS/Hannibal Hanschke TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel, president of the German soccer federation (DFB) Wolfgang Niersbach and German Interior Minister Hans-Peter Friedrich (L-R) celebrate after Philipp Lahm scored during the quarter-final soccer match between Germany and Greece at the PGE Arena in Gdansk, June 22, 2012. REUTERS/Peter Andrews (POLAND - Tags: SPORT SOCCER TPX IMAGES OF THE DAY) 

Russian President Vladimir Putin talks with German Chancellor Angela Merkel as they attend the International 70th D-Day Commemoration Ceremony in Ouistreham June 6, 2014. World leaders and veterans gathered by the beaches of Normandy on Friday to mark the 70th anniversary of the Allied D-Day landings that helped turn the tables in World War Two, with host France hoping the event will bring a thaw in the?Ukraine?crisis. REUTERS/Kevin Lamarque (FRANCE - Tags: POLITICS ANNIVERSARY CONFLICT TPX IMAGES OF THE DAY) 

Italian Prime Minister Silvio Berlusconi (C) speaks with France's President Nicolas Sarkozy and German Chancellor Angela Merkel (L) during a news conference following a summit to discuss the international financial crisis at the Elysee Palace October 4, 2008. REUTERS/Philippe Wojazer (FRANCE) 

Germany's Chancellor Angela Merkel (R) talks with France's President Nicolas Sarkozy during a family photo session at a EU summit in Brussels March 13, 2008. European Union leaders meet on Thursday for a two-day summit to set a tight timetable for adopting ambitious energy policy reforms and measures to fight climate change, despite some sharp differences over how to achieve those goals. REUTERS/Thierry Roge (BELGIUM) 

German Chancellor Angela Merkel reacts as she attends a news conference following the Hesse state election in Berlin, Germany, October 29, 2018. REUTERS/Hannibal Hanschke TPX IMAGES OF THE DAY 

Managing Director of the International Monetary Fund (IMF) Christine Lagarde (R) looks on as German Chancellor Angela Merkel greets Ivanka Trump (2nd R), daughter of the US President, during the panel discussion "Launch Event Women's Entrepreneur Finance Initiative" on the second day of the G20 Summit in Hamburg, Germany, July 8, 2017. REUTERS/Patrik STOLLARZ/Pool TPX IMAGES OF THE DAY 

German Chancellor Angela Merkel of the Christian Democratic Union (CDU) and her husband Joachim Sauer (back) smile as they arrive to cast their votes for the general election in Berlin, September 27, 2009. Germans voted on Sunday in a federal election that looks likely to return Merkel to power but may deny her the centre-right government she says is needed to revive Europe's largest economy.
REUTERS/Kai Pfaffenbach (GERMANY) 

Workers remove an advertisement showing German Chancellor Angela Merkel with a slogan that reads "Mother of Nation - Thanks For 16 Years of Hard Work" before the upcoming state elections in Hamburg, Germany September 24, 2021. REUTERS/Fabian Bimmer TPX IMAGES OF THE DAY