President Xi Jinping and U.S. President Donald Trump agreed to delay threatened new tariffs and postpone a planned hike on existing ones after a two-hour meeting at the Palacio Duhau Park Hyatt in Buenos Aires, Argentina, on Dec. 1. Photo: VCG

Argentine President Mauricio Macri with U.S. President Donald Trump at the Casa Rosada in Buenos Aires, Argentina, on Nov. 30. Photo: VCG

World leaders gather for a group photo on the first day of the G-20 Leaders’ Summit in Buenos Aires, Argentina, on Nov. 30. From left are Italian Prime Minister Giuseppe Conte, Britain's Prime Minister Theresa May, European Commission President Jean-Claude Juncker, French President Emmanuel Macron, European Council President Donald Tusk, Spanish Prime Minister Pedro Sánchez and Dutch Prime Minister Mark Rutte. Photo: VCG

Russian President Vladimir Putin and Saudi Arabian Crown Prince Mohammed bin Salman pictured at the ceremony of G-20 Leaders’ Summit in Buenos Aires, Argentina, on Nov. 30. Photo: VCG

Japanese Prime Minister Shinzo Abe and U.S. President Donald Trump hold a bilateral meeting at the summit. Photo: VCG

Japanese Prime Minister Shinzo Abe waves his hand as world leaders gather for a group photo on the first day of the summit. Photo: VCG

U.S. President Donald Trump walks past Russian President Vladimir Putin as leaders gather for the group photo. Photo: VCG

Argentine President Mauricio Macri talks with U.S. President Donald. Photo: VCG