United States Secretary of State John Kerry rides a boat through the Mekong River Delta December 15, 2013. It was the first time Kerry has returned to the Mekong River Delta since he commanded a swift... more 
United States Secretary of State John Kerry rides a boat through the Mekong River Delta December 15, 2013. It was the first time Kerry has returned to the Mekong River Delta since he commanded a swift patrol boat during the Vietnam War and he used the visit to highlight the threat from climate change and upstream development on the livelihoods of millions of fisherman and farmers. (REUTERS/Brian Snyder) less 
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Reuters | Photo By REUTERS/Brian Snyder
Mon, Dec 16, 2013 9:00 AM EST