November 21 is World Hello Day. The purpose of World Hello Day is to express that conflicts should be resolved through communication rather than the use of force. World leaders clearly understand the importance of personal communication in preserving peace. See how world leaders greet each other in this photo gallery.
All the presidents’ handshakes: world leaders reach out to meet and greet
World Hello Day is observed annually on November 21 to express that conflicts should be resolved through communication rather than the use of force
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US President Donald Trump does the "ASEAN-way handshake" with Russian Prime Minister Dmitry Medvedev, Vietnamese Prime Minister Nguyen Xuan Phuc and Philippine President Rodrigo Duterte during the opening ceremony at the ASEAN Summit in Manila, Philippines, 2017
© AP Photo/Andrew Harnik Britain's Prime Minister Theresa May is welcomed by German Chancellor Angela Merkel in Berlin, Germany, 2016
© AP Photo/Michael Sohn US President Donald Trump shakes hands with Russian President Vladimir Putin as they pose for a group picture during the 25th APEC summit in Da Nang, Vietnam, 2017
© EPA-EFE/MICHAEL KLIMENTYEV/SPUTNIK/KREMLIN POOL French President Emmanuel Macron welcomes Indian Prime Minister Narendra Modi at the Elysee Palace in Paris, France, 2017
© AP Photo/Kamil Zihnioglu US President Donald Trump is welcomed by German Chancellor Angela Merkel on the first day of the G-20 summit in Hamburg, Germany, 2017
© AP Photo/Jens Meyer Japan's Prime Minister Shinzo Abe and China's President Xi Jinping, prepare to shake hands during their meeting at the Great Hall of the People in Beijing, 2014. The handshake between Xi and Abe marked the first meeting between the two men since either took power, and a first gesture toward easing two years of high tensions
© AP Photo/Kim Kyung-Hoon French President Emmanuel Macron and German Chancellor Angela Merkel shake hands after a press conference in Berlin, Germany, 2017
© Michael Kappeler/dpa via AP Russia's President Vladimir Putin and 44th US President Barack Obama seen during the meeting on the sidelines of the 70th session of the United Nations General Assembly, 2015
© Sergei Guneyev/Russian Presidential Press and Information Office/TASS German Chancellor Angela Merkel shakes hands with Saudi Arabia's former finance minister, Ibrahim al-Assaf, at the G20 summit in Hamburg, Germany, 2017
© EPA/IAN LANGSDON Turkey's President Recep Tayyip Erdogan and Chinese President Xi Jinping are greeted by Chinese children jumping and waving Turkish and Chinese national flags during a welcome ceremony at the Great Hall of the People in Beijing, 2015
© AP Photo/Ng Han Guan