Today's News: Dec. 30, 2016

—Russian President Vladimir Putin said he won’t expel U.S. diplomats despite being urged to do so by his Foreign Ministry as a retaliation for a similar move Thursday by the United States. More here

—A Rio de Janeiro police officer confessed to killing Greece’s ambassador to Brazil. The officer was having an affair with the ambassador’s wife. More here

—We’re live-blogging the news stories of the day below. All updates are in Eastern Standard Time (GMT -5).

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This article was originally published on The Atlantic.