British Prime Minister Boris Johnson gives an update on the coronavirus pandemic during a virtual news conference Monday in London. Johnson and other world leaders signed a letter calling for greater international cooperation in fighting future pandemics. Hollie Adams/WPA/Pool/Getty Images hide caption
German Chancellor Angela Merkel addresses the Bundestag in Berlin on the German government's measures against COVID-19 on Thursday. Anadolu Agency/Anadolu Agency via Getty Images hide caption
Octavian Ursu of the German Christian Democrats won a runoff for mayor of the small town of Goerlitz in the country's east, beating an opponent from the far-right Alternative for Germany. Sean Gallup/Getty Images hide caption
Hacked information that was leaked via Twitter included private data from German Chancellor Angela Merkel — seen here speaking in Germany's Bundestag last month. Fabrizio Bensch/Reuters hide caption
President Trump, German Chancellor Angela Merkel and French President Emmanuel Macron took part in a ceremony Sunday to commemorate the end of World War I. Francois Mori/AP hide caption
In what was supposed to be a brief photo op ahead of a breakfast meeting, President Trump launched a verbal attack against NATO defense spending as cameras clicked away. Pablo Martinez Monsivais/AP hide caption
German Chancellor Angela Merkel, who is also chairwoman of the German Christian Democratic Union, announces a new deal with Horst Seehofer, the interior minister and chairman of Bavaria's Christian Social Union, in Berlin on Monday. Michael Sohn/AP hide caption
German Chancellor Angela Merkel, right, and the chairman of the German Christian Social Union state group, Alexander Dobrindt, center, arrive for a faction meeting at the Bundestag, in Berlin, on Monday. Michael Sohn/AP hide caption
President Trump does the "ASEAN-way handshake" with Vietnamese Prime Minister Nguyen Xuan Phuc (left) and Philippines President Rodrigo Duterte on stage during the opening ceremony at the ASEAN Summit on Monday. Trump initially did the handshake incorrectly. Andrew Harnik/AP hide caption
German Chancellor Helmut Kohl, shown in 1989, oversaw the reunification of his country after the fall of the Berlin Wall. ullstein bild via Getty Images hide caption
First daughter and presidential adviser Ivanka Trump (second from left) arrives for a panel discussion with (from left) W20 co-Chairwoman Stephanie Bschorr, German Chancellor Angela Merkel and Queen Maxima of the Netherlands. John MacDougall/AFP/Getty Images hide caption
President Trump looks on as German Chancellor Angela Merkel addresses the media at a joint news conference Friday at the White House. Chip Somodevilla/Getty Images hide caption
German Chancellor Angela Merkel arrives at a news conference where she announced her plan to run for a fourth term next year. Merkel is the leader of the conservative German Christian Democrats party. Carsten Koall/Getty Images hide caption
At a news conference with German Chancellor Angela Merkel, Nigeria's President Muhammadu Buhari answered criticisms from his wife. JOHN MACDOUGALL/AFP/Getty Images hide caption
Angela Merkel on the cover of Time magazine. Time hide caption
German Chancellor Angela Merkel and German Finance Minister Wolfgang Schaeuble talk during a special meeting of the German parliament over the proposed bailout package for Greece. Wolfgang Kumm/DPA/Landov hide caption
President Obama and German Chancellor Angela Merkel hold a joint news conference at the White House on Monday. Kevin Lamarque/Reuters /Landov hide caption
Ukrainian President Petro Poroshenko, left, German Chancellor Angela Merkel and U.S. Vice President Joe Biden, background right, arrive for a meeting in Munich, Germany on Saturday. Matthias Schrader/AP hide caption
German Chancellor Angela Merkel stands in front of a poster showing a new two-euro commemorative coin at the Chancellery in Berlin, Germany, on Thursday. Britta Pedersen/DPA/Landov hide caption
German Chancellor Angela Merkel, left, and Mayor of Berlin Klaus Wowereit, 3rd from left, place candles to commemorate the victims of the Wall at the Berlin Wall memorial site at Bernauer Strasse in Berlin, Germany, on Sunday. Markus Schreiber/AP hide caption
News of U.S. surveillance in Europe has met with distrust and anger; officials are heading to Washington to discuss matters next week. Here, members of an artists' group paint a mural called "Surveillance of the Fittest" on a wall in Cologne, Germany, on Thursday. Frank Augstein/AP hide caption
Afghan President Hamid Karzai speaks during a ceremony Tuesday at a military academy on the outskirts of Kabul. Rahmat Gul/AP hide caption
German Chancellor Angela Merkel on Wednesday (Aug. 23, 2011) in Belgrade. Andrej Isakovic/AFP/Getty Images hide caption