Photos: The G20 Summit

HAMBURG, GERMANY - JULY 06: German anti-riot police clash with protesters at Hamburg's Schanzenviertel, night before the beginning of G20, on July 06, 2017 in Hamburg, Germany.

PHOTOGRAPH BY Simon Becker / Le Pictorium / Barcroft Images

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HAMBURG, GERMANY - JULY 7: German Chancellor Angela Merkel greets U.S. President Donald Trump upon his arrival for the first day of the G20 economic summit on July 7, 2017 in Hamburg, Germany. The G20 group of nations are meeting July 7-8 and major topics will include climate change and migration. (Photo by Morris MacMatzen/Getty Images)

HAMBURG, GERMANY - JULY 7: (RUSSIA OUT) German Chancellor Angela Merkel (2L) listens to French President Emmanuel Macron (C) during the plenary session at the G20 Summit on July 7, 2017 in Hamburg, Germany. (Photo by Mikhail Svetlov/Getty Images)

Riot police use water cannon against protesters on July 7, 2017 in Hamburg, northern Germany, where leaders of the world's top economies gather for a G20 summit.
Protesters clashed with police and torched patrol cars in fresh violence ahead of the G20 summit, police said. German police and protestors had clashed already the day before at an anti-G20 march, with police using water cannon and tear gas to clear a hardcore of masked anti-capitalist demonstrators, AFP reporters said. / AFP PHOTO / Odd ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)

HAMBURG, GERMANY - JULY 07: British Prime Minister Theresa May and other leaders arrive for the group photo on the first day of the G20 economic summit on July 7, 2017 in Hamburg, Germany. The G20 group of nations are meeting July 7-8 and major topics will include climate change and migration. (Photo by Sean Gallup/Getty Images)

HAMBURG, GERMANY - JULY 07: US President Donald Trump attends the G20 summit on July 7, 2017 in Hamburg, Germany. Leaders of the G20 group of nations are meeting for the July 7-8 summit. Topics high on the agenda for the summit include climate policy and development programs for African economies. (Photo by Stefan Rousseau - Pool/Getty Images)

HAMBURG, GERMANY - JULY 07: President of China Xi Jinping (L), Prime Minister of India Narendra Modi (C) and President of Russia Vladimir Putin (R) arrive to attend a meeting of BRICS leaders within the G20 Leaders' Summit in Hamburg, Germany on July 07, 2017. (Photo by Stringer/Anadolu Agency/Getty Images)

Dark smoke hangs over the Schanzenviertel district on July 7, 2017 in Hamburg, northern Germany, where leaders of the world's top economies gather for a G20 summit.
Protesters clashed with police and torched patrol cars in fresh violence ahead of the G20 summit, police said. German police and protestors had clashed already on Thursday (July 6, 2017) at an anti-G20 march, with police using water cannon and tear gas to clear a hardcore of masked anti-capitalist demonstrators, AFP reporters said. / AFP PHOTO / DPA / Kay Nietfeld / Germany OUT (Photo credit should read KAY NIETFELD/AFP/Getty Images)

TOPSHOT - (L-R) US President Donald Trump, China's President Xi Jinping, German Chancellor Angela Merkel, Argentinia's President Mauricio Macri and Australia's Prime Minister Malcolm Turnbull turn around for photographers at the start of the first working session of the G20 meeting in Hamburg, northern Germany, on July 7.
Leaders of the world's top economies will gather from July 7 to 8, 2017 in Germany for likely the stormiest G20 summit in years, with disagreements ranging from wars to climate change and global trade. / AFP PHOTO / AFP PHOTO AND POOL / John MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)

$HAMBURG, GERMANY JULY 7, 2017: Russia's President Vladimir Putin (L) and US President Donald Trump hold a bilateral meeting on the sidelines of the G20 summit in Hamburg. Mikhail Metzel/TASS (Photo by Mikhail Metzel\TASS via Getty Images)$

HAMBURG, GERMANY - JULY 07: Police use water cannons against demonstrators at Hamburg harbor protesting against the G20 Summit on July 6, 2017 in Hamburg, Germany. Leaders of the G20 group of nations are arriving in Hamburg today for the July 7-8 economic summit and authorities are bracing for large-scale and disruptive protest efforts. (Photo by Thomas Lohnes/Getty Images)

HAMBURG, GERMANY - JULY 07: (Front row L-R) French president Emmanuel Macron, U.S president Donald Trump, Indonesian president Joko Widodo, Mexican president Enrique Pena Nieto, South African President Jacob Zuma, Argentinian president Mauricio Macri, German chancellor Angela Merkel, Chinese president Xi Jinping, Russian president Vladimir Putin, Turkish president Recep Tayyip Erdogan, Brazilian president Michel Temer and South Korea's president Moon Jae-in, (second row L-R) Guinean president and the chairman of the African Union Alpha Conde, Italian prime minister Paolo Gentiloni, Canadian prime minister Justin Trudeau, Indian prime minister Narendra Modi, Japanese prime minister Shinzo Abe, Australian prime Minister Malcolm Turnbull, British prime minister Theresa May, the president of the European Council Donald Tusk, the president of the European Commission Jean-Claude Juncker, (back L-R) the secretary general of the United Nations (UN) Antonio Guterres, the director of the World Trade Organisation (WTO) Alberto Azevedo, Norway's prime minister Erna Solberg, the director general of the World Health Organisation (WHO) Tedros Adhanom Ghebreyesus, Dutch prime minister Mark Rutte, the managing director of the International Monetary Fund (IMF) Christine Lagarde, Senegalese president Macky Sall, the director of the International Labour Organisation (ILO) Guy Ryder, Singaporean prime minister Lee Hsien Loong, World Bank president Jim Yong Kim, Spanish prime minister Mariano Rajoy, Vietnamese prime minister Nguyen Xuan Phuc, the president of the Financial Stability Board (FSB) Mark Carney, Saudi Arabian minister of state Ibrahim Abdulaziz Al-Assaf, and the secretary general of the Organisation for Economic Cooperation and Development Jose Angel Gurria pose for a family photo during the G20 summit on July 7, 2017 in Hamburg, Germany. (Photo by Matt Cardy/Getty Images)

Riot police chase protesters on July 7, 2017 in Hamburg, northern Germany, where leaders of the world's top economies gather for a G20 summit.
Protesters clashed with police and torched patrol cars in fresh violence ahead of the G20 summit, police said. German police and protestors had clashed already the day before at an anti-G20 march, with police using water cannon and tear gas to clear a hardcore of masked anti-capitalist demonstrators, AFP reporters said. / AFP PHOTO / Odd ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)

HAMBURG, GERMANY - JULY 07: A protocol worker removes the European Union flag to make space for the group photo on the first day of the G20 economic summit on July 7, 2017 in Hamburg, Germany. The G20 group of nations are meeting July 7-8 and major topics will include climate change and migration. (Photo by Sean Gallup/Getty Images)

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HAMBURG, Germany -- German anti-riot police clash with protesters at Hamburg's Schanzenviertel on July 6, the night before the beginning of G20. (Simon Becker/Barcroft Media/Getty Images)

HAMBURG, Germany -- German Chancellor Angela Merkel greets U.S. President Donald Trump upon his arrival for the first day of the G20 economic summit on July 7, 2017. (Morris MacMatzen/Getty Images)

HAMBURG, Germany -- German Chancellor Angela Merkel, second from left, listens to French President Emmanuel Macron, center, during the plenary session at the G20 Summit on July 7, 2017. (Mikhail Svetlov/Getty Images)

HAMBURG, Germany -- Riot police use a water cannon against protesters on July 7, 2017, as protesters clashed with police and torched patrol cars in fresh violence ahead of the G20 summit, police said. (Odd Anderson/AFP/Getty Images)

HAMBURG, Germany -- British Prime Minister Theresa May and other leaders arrive for the group photo on the first day of the G20 economic summit on July 7, 2017. (Sean Gallup/Getty Images)

HAMBURG, Germany -- U.S. President Donald Trump attends the G20 summit on July 7, 2017. (Stefan Rousseau/Pool/Getty Images)

HAMBURG, Germany: President of China Xi Jinping, left, Prime Minister of India Narendra Modi, center, and President of Russia Vladimir Putin, right, arrive to attend a meeting of BRICS leaders within the G20 Leaders' Summit July 07, 2017. (Anadolu Agency/Getty Images)

HAMBURG, Germany - Dark smoke hangs over the Schanzenviertel district of Hamburg on July 7, 2017. Police have clashed with anti-capitalist protesters as world leaders gather in the city. (Kay Nietfeld/AFP/Getty Images)

HAMBURG, Germany -- From left: U.S. President Donald Trump, China's President Xi Jinping, German Chancellor Angela Merkel, Argentinia's President Mauricio Macri and Australia's Prime Minister Malcolm Turnbull turn around for photographers at the start of the first working session of the G20 meeting on July 7, 2017. (John MacDougall/AFP/Getty Images)

HAMBURG, Germany -- Russia's President Vladimir Putin, left, and U.S. President Donald Trump hold a bilateral meeting on the sidelines of the G20 summit July 7, 2017. (Mikhail Metzel/TASS/Getty Images)

HAMBURG, Germany -- Police use water cannons against demonstrators at Hamburg harbor protesting against the G20 Summit on July 6, 2017. (Thomas Lohnes/Getty Images)

HAMBURG, Germany -- World leaders pose for a group photo at the G20 summit on July 7, 2017. (Matt Cardy/Getty Images)

HAMBURG, Germany -- Riot police chase protesters on July 7, 2017 as leaders of the world's top economies gather in the city for a G20 summit. German police and protestors had clashed already the day before at an anti-G20 march, with police using water cannon and tear gas to clear a hardcore of masked anti-capitalist demonstrators, AFP reporters said. (Odd Anderson/AFP/Getty Images)

HAMBURG, Germany - A protocol worker removes the European Union flag to make space for the group photo on the first day of the G20 economic summit on July 7, 2017. (Sean Gallup/Getty Images)