Participants of the G20 summit and their spouses pose for a family photo aroung German Chancellor Angela Merkel (2ndL) and her husband Joachim Sauer (3rdR) at the Elbphilharmonie before attending a concert in Hamburg, northern Germany, on July 7, 2017. First row from L to R: wife of the Argentinia's President Juliana Awada, Argentinia's President Mauricio Macri, wife of China's President Peng Liyuan and China's President Xi Jinping. Second row from L to R: Indonesia's President Joko Widodo, French President's wife Brigitte Macron, French President Emmanuel Macron, US First Lady Melania Trump, US President Donald Trump and India's Prime Minister Narendra Modi. REUTERS/LUDOVIC MARIN/Pool

Ivanka Trump attends the Women’s Entrepreneurship Finance event during the G20 leaders summit in Hamburg, Germany July 8, 2017. REUTERS/Michael Kappeler/Pool TPX IMAGES OF THE DAY - RTX3AMKV

German Chancellor Angela Merkel prepare to welome leaders at the G20 summit in Hamburg, Germany July 7, 2017. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY - RTX3AFDN

German Chancellor Angela Merkel greets U.S. President Donald Trump at the beginning of the G20 summit in Hamburg, Germany, July 7, 2017. REUTERS/John MACDOUGALL,POOL - RTX3AFTE

Brigitte Macron, wife of France's President Emmanuel Macron, left, and Juliana Awada, wife of Argentine President Mauricio Macri leave a ship after a boat tour of the spouses program on the first day of the G-20 summit in Hamburg, Germany, July 7, 2017. REUTERS/Jens Büttner, pool - RTX3AGQ2

U.S. President Donald Trump (R) claps the shoulder of French President Emmanuel Macron at the start of the first working session of the G20 meeting in Hamburg, Germany, July 7, 2017. REUTERS/John MacDougall/Pool TPX IMAGES OF THE DAY - RTX3AHQ7

Brigitte Macron (l), Melania Trump (2nd L.), Sophie Gregoire (C), Juliana Awada (5.R.), Christiane Frising (3.R) and other G20 leaders spouses listen to Hamburg mayor Olaf Scholz during a G20 leaders spouses event at the town hall during the G20 summit in Hamburg, Germany July 8, 2017. REUTERS/Jens Buettner, Pool - RTX3AMCF

Canada's Prime Minister Justin Trudeau his wife Sophie and son Hadrien arrive for the G 20 Summit in Hamburg, Germany, July 6, 2017. REUTERS/Axel Schmidt TPX IMAGES OF THE DAY - RTX3AABN

German Chancellor Angela Merkel reacts next to U.S. President Donald Trump during the G20 leaders summit in Hamburg, Germany July 7, 2017. REUTERS/Philippe Wojazer - RTX3AGO5

US President Donald Trump (2nd R) jokes as his daughter Ivanka Trump (2nd L) poses with participants of 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 - RTX3AM7N

U.S. President Donald Trump and first lady Melania Trump board Air Force One during their departure back to Washington, at Hamburg International Airport, in Hamburg, Germany, July 8, 2017. REUTERS/Carlos Barria - RTX3ANH4

German Chancellor Angela Merkel welcomes Russia's President Vladimir Putin at the G20 summit in Hamburg, Germany July 7, 2017. REUTERS/Carlos Barria TPX IMAGES OF THE DAY - RTX3AFGN

U.S. President Donald Trump, Turkish President Recep Tayyip Erdogan and Turkey's Foreign Minister Mevlut Cavusoglu talk during the working session at the G20 leaders summit in Hamburg, Germany, July 7, 2017. REUTERS/Kai Pfaffenbach - RTX3AGXO

U.S. President Donald Trump speaks with Russian President Vladimir Putin during the their bilateral meeting at the G20 summit in Hamburg, Germany July 7, 2017. REUTERS/Carlos Barria TPX IMAGES OF THE DAY - RTX3AI4I

U.S. President Donald Trump attends the bilateral meeting with Chinese President Xi Jinping at the G20 leaders summit in Hamburg, Germany July 8, 2017. REUTERS/Carlos Barria - RTX3AMTJ

German Chancellor Angela Merkel welcomes Saudi Arabia's Minister of State Ibrahim Abdulaziz Al-Assaf at the G20 summit in Hamburg, Germany July 7, 2017. REUTERS/Carlos Barria TPX IMAGES OF THE DAY - RTX3AFMC

French President Emmanuel Macron talks to German Chancellor Angela Merkel as India's Prime Minister Narendra Modi listens during the G20 leaders summit in Hamburg, Germany July 7, 2017. REUTERS/Philippe Wojazer - RTX3AGRL

German Chancellor Angela Merkel meets U.S. President Donald Trump on the eve of the G-20 summit in Hamburg, Germany, July 6, 2017. REUTERS/Michael Kappeler/POOL TPX IMAGES OF THE DAY - RTX3AC42

U.S. President Donald Trump looks at French President Emmanuel Macron before a family photo at the G20 summit in Hamburg, Germany July 7, 2017. REUTERS/Carlos Barria - RTX3AGKS

French President Emmanuel Macron, German Chancellor Angela Merkel and U.S. President Donald Trump confer at the start of the first working session of the G20 meeting in Hamburg, Germany, July 7, 2017. REUTERS/John MacDougall/Pool - RTX3AHQ3

French President Emmanuel Macron (L) and Russian President Vladimir Putin (R) attend a bilateral meeting on the second day of the G20 summit in Hamburg, Germany, July 8, 2017. REUTERS/Ian Langsdon/POOL - RTX3AM5Z

U.S. President Donald Trump and Chinese President Xi Jinping (R) shake hands prior to a meeting on the sidelines of the G20 Summit in Hamburg, Germany, July 8, 2017. REUTERS/Saul Loeb, Pool - RTX3AMVS

Argentina's President Mauricio Macri, German Chancellor Angela Merkel, Chinese President Xi Jinping, Russian President Vladimir Putin, Turkish President Recep Tayyip Erdogan, India's Prime Minister Narendra Modi, Japanese Prime Minister Shinzo Abe prepare for a family photo at the G20 leaders summit in Hamburg, Germany July 7, 2017. REUTERS/Wolfgang Rattay - RTX3AGVS

Japanese Prime Minister Shinzo Abe reaches to shake hands with U.S. President Donald Trump during the bilateral meeting at the G20 leaders summit in Hamburg, Germany July 8, 2017. REUTERS/Carlos Barria - RTX3AMKL