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BUENOS AIRES, ARGENTINA - NOVEMBER 30, 2018: Japan's Prime Minister Shinzo Abe and his wife Akie, US President Donald Trump with his wife Melania, Argentina's President Mauricio Macri with his wife Juliana Awada, China's President Xi Jinping with his with wife Peng Liyuan, Germany's Chancellor Angela Merkel, and Russia's President Vladimir Putin (L-R 1st row), India's Prime Minister Narendra Modi, Turkey's President Recep Tayyip Erdogan with his wife Emine, France's President Emmanuel Macron with his wife Brigitte, Prime Minister Mark Rutte of the Netherlands, Canada's Prime Minister Justin Trudeau with his wife Sophie Gregoire Trudeau, Britain's Prime Minister Theresa May, and Brazil's President Michel Temer (L-R 2nd row) pose for a group photo at a reception at the Colon Theatre. Mikhail Klimentyev/Russian Presidential Press and Information Office/TASS (Photo by Mikhail Klimentyev\TASS via Getty Images)

BUENOS AIRES, ARGENTINA - NOVEMBER 30, 2018: Japan's Prime Minister Shinzo Abe and his wife Akie, US President Donald Trump with his wife Melania, Argentina's President Mauricio Macri with his wife Juliana Awada, China's President Xi Jinping with his with wife Peng Liyuan, Germany's Chancellor Angela Merkel, and Russia's President Vladimir Putin (L-R 1st row), India's Prime Minister Narendra Modi, Turkey's President Recep Tayyip Erdogan with his wife Emine, France's President Emmanuel Macron with his wife Brigitte, Prime Minister Mark Rutte of the Netherlands, Canada's Prime Minister Justin Trudeau with his wife Sophie Gregoire Trudeau, Britain's Prime Minister Theresa May, and Brazil's President Michel Temer (L-R 2nd row) pose for a group photo at a reception at the Colon Theatre. Mikhail Klimentyev/Russian Presidential Press and Information Office/TASS (Photo by Mikhail Klimentyev\TASS via Getty Images)