Observing a moment of silence for the Paris attack victims at COP21

President Barack Obama, Secretary of State John Kerry and other heads of state and delegations, observe a minute of silence for the Paris attack victims during the opening ceremony of the 21st Conference of the Parties to the United Nations Framework Convention on Climate Change (COP21), at the Parc des Expositions du Bourget in Le Bourget, Paris, France, Nov. 30, 2015. (Official White House Photo by Pete Souza) 

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