Germany's Chancellor Angela Merkel, Christian Democratic Union (CDU) Leader Armin Laschet and Christian Social Union (CSU) Leader Markus Soeder attend a congress of the Christian Democratic Union (CDU) in Berlin, Germany, June 21, 2021. REUTERS/Michele Tantussi/Pool

Germany's Christian Democratic Union (CDU) Leader Armin Laschet and Christian Social Union (CSU) Leader Markus Soeder bump elbows as they attend a congress of the Christian Democratic Union (CDU) in Berlin, Germany, June 21, 2021. REUTERS/Michele Tantussi/Pool

Germany's Christian Democratic Union (CDU) Leader Armin Laschet arrives for a congress of the Christian Democratic Union (CDU) in Berlin, Germany, June 21, 2021. REUTERS/Michele Tantussi/Pool

Germany's Chancellor Angela Merkel attends a congress of the Christian Democratic Union (CDU) in Berlin, Germany, June 21, 2021. REUTERS/Michele Tantussi/Pool

Germany's Chancellor Angela Merkel and Christian Social Union (CSU) Leader Markus Soeder attend a congress of the Christian Democratic Union (CDU) in Berlin, Germany, June 21, 2021. REUTERS/Michele Tantussi/Pool

Germany's Chancellor Angela Merkel arrives for a congress of the Christian Democratic Union (CDU) in Berlin, Germany, June 21, 2021. REUTERS/Michele Tantussi/Pool

Germany's Minister of State for Digitization, Dorothee Baer, speaks to members of the media as she arrives for a leadership meeting of the Christian Democratic Union (CDU) and the Bavarian Christian Social Union (CSU) on the eve of the unveiling of the alliance's electoral program ahead of the September general election, in Berlin, June 20, 2021. Odd Andersen/Pool via REUTERS

State Premier of North Rhine-Westphalia and leader of Germany's Christian Democratic Union (CDU), Armin Laschet, and State Premier of Bavaria and leader of the Bavarian Christian Social Union (CSU), Markus Soeder, leave after speaking to members of the media prior to a meeting of the CDU/CSU alliance's leadership on the eve of the unveiling of its electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

State Premier of North Rhine-Westphalia and leader of Germany's Christian Democratic Union (CDU), Armin Laschet, and State Premier of Bavaria and leader of the Bavarian Christian Social Union (CSU), Markus Soeder, leave after speaking to members of the media prior to a meeting of the CDU/CSU alliance's leadership on the eve of the unveiling of its electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

State Premier of North Rhine-Westphalia and leader of Germany's Christian Democratic Union (CDU), Armin Laschet, speaks to members of the media prior to a meeting of the leadership of the CDU and the Bavarian Christian Social Union (CSU) on the eve of the unveiling of the alliance's electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

State Premier of Bavaria and leader of the Christian Social Union (CSU), Markus Soeder, speaks to members of the media prior to a meeting of the leadership of the CSU and Germany's Christian Democratic Union (CDU) on the eve of the unveiling of the alliance's electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

Norbert Roettgen, a member of Germany's Christian Democratic Union (CDU), arrives for a meeting of the leadership of the CDU and the Bavarian Christian Social Union (CSU) on the eve of the unveiling of the alliance's electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

State Premier of North Rhine-Westphalia and leader of Germany's Christian Democratic Union (CDU), Armin Laschet, and State Premier of Bavaria and leader of the Bavarian Christian Social Union (CSU), Markus Soeder, speak to members of the media prior to a meeting of the CDU/CSU alliance's leadership on the eve of the unveiling of its electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

State Premier of North Rhine-Westphalia and leader of Germany's Christian Democratic Union (CDU), Armin Laschet, and State Premier of Bavaria and leader of the Bavarian Christian Social Union (CSU), Markus Soeder, arrive for a meeting of the CDU/CSU alliance's leadership on the eve of the unveiling of its electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

State Premier of North Rhine-Westphalia and leader of Germany's Christian Democratic Union (CDU), Armin Laschet, and State Premier of Bavaria and leader of the Bavarian Christian Social Union (CSU), Markus Soeder, arrive for a meeting of the CDU/CSU alliance's leadership on the eve of the unveiling of its electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

State Premier of North Rhine-Westphalia and leader of Germany's Christian Democratic Union (CDU), Armin Laschet, and State Premier of Bavaria and leader of the Bavarian Christian Social Union (CSU), Markus Soeder, speak to members of the media prior to a meeting of the CDU/CSU alliance's leadership on the eve of the unveiling of its electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

State Premier of North Rhine-Westphalia and leader of Germany's Christian Democratic Union (CDU), Armin Laschet, and State Premier of Bavaria and leader of the Bavarian Christian Social Union (CSU), Markus Soeder, speak to members of the media prior to a meeting of the CDU/CSU alliance's leadership on the eve of the unveiling of its electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

State Premier of North Rhine-Westphalia and leader of Germany's Christian Democratic Union (CDU), Armin Laschet, and State Premier of Bavaria and leader of the Bavarian Christian Social Union (CSU), Markus Soeder, arrive for a leadership meeting of the CDU/CSU alliance on the eve of the unveiling of its electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

Germany's Transport Minister and Bavarian Christian Social Union (CSU) politician Andreas Scheuer arrives for a leadership meeting of the Christian Democratic Union (CDU) and the CSU on the eve of the unveiling of their electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

Germany's Chancellor Angela Merkel arrives for a leadership meeting of the Christian Democratic Union (CDU) and the Bavarian Christian Social Union (CSU) on the eve of the unveiling of their electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

Germany's Chancellor Angela Merkel arrives for a leadership meeting of the Christian Democratic Union (CDU) and the Bavarian Christian Social Union (CSU) on the eve of the unveiling of their electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

Germany's Chancellor Angela Merkel arrives for a leadership meeting of the Christian Democratic Union (CDU) and the Bavarian Christian Social Union (CSU) on the eve of the unveiling of their electoral programme ahead of the September general election, in Berlin, Germany, June 20, 2021. Odd Andersen/Pool via REUTERS

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

A police officer is seen as people attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

A police officer is seen as people attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

Police arrives as people attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

Police arrives as people attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Winner Russia's Ludmilla Samsonova and runners up Switzerland's Belinda Bencic pose with their trophies after the final REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova celebrates with the trophy after winning the final against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova celebrates with the trophy after winning the final against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova celebrates with the trophy after winning the final against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova celebrates with the trophy after winning the final against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova celebrates with the trophy after winning the final against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova celebrates with the trophy after winning the final against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Tournament Director Barbara Rittner during the ceremony REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Switzerland's Belinda Bencic during the final match against Russia's Ludmilla Samsonova REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova reacts during the final match against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova during the final match against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova during the final match against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova reacts during the final match against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova in action during the final match against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 Russia's Ludmilla Samsonova in action during the final match against Switzerland's Belinda Bencic REUTERS/Annegret Hilse

German Interior Minister Horst Seehofer attends an official event commemorating the victims of displacement and expulsion during World War II, in Berlin, Germany, June 20, 2021. Fabian Sommer/Pool via REUTERS

German Interior Minister Horst Seehofer attends an official event commemorating the victims of displacement and expulsion during World War II, in Berlin, Germany, June 20, 2021. Fabian Sommer/Pool via REUTERS

German Interior Minister Horst Seehofer attends an official event commemorating the victims of displacement and expulsion during World War II, in Berlin, Germany, June 20, 2021. Fabian Sommer/Pool via REUTERS

People attend the "Rave-O-lution" protest of the Berlin club scene on boats at the Spree river under the motto "Alle in einem Boot" (all in one boat), in Berlin, Germany June 20, 2021. REUTERS/Michele Tantussi

Tennis - WTA 500 - bett1 Open - Rot-Weiss Tennis Club, Berlin, Germany - June 20, 2021 General view of Russia's Ludmilla Samsonova in action during the final match against Switzerland's Belinda Bencic as spectators hold an umbrella REUTERS/Annegret Hilse TPX IMAGES OF THE DAY

German Interior Minister Horst Seehofer attends an official event commemorating the victims of displacement and expulsion during World War II, in Berlin, Germany, June 20, 2021. Fabian Sommer/Pool via REUTERS