Obama during his presidential campaign pledged to protect them, but Greenwald says he's failed to do so:

Those pretty words have given way to the most aggressive crusade to expose, punish and silence "courageous and patriotic" whistleblowers by any President in decades.  As the Federation of American Scientists' Steven Aftergood put it, "They’re going after this at every opportunity and with unmatched vigor."  And last May, The New York Times described how "the Obama administration is proving more aggressive than the Bush administration in seeking to punish unauthorized leaks."  This war has entailed multiple indictments and prosecutions of Bush-era leaks which exposed various degrees of corruption, ineptitude and illegality... But it's the DOJ's increasing willingness to target journalists as part of this crusade that has now escalated its seriousness. 

We want to hear what you think about this article. Submit a letter to the editor or write to letters@theatlantic.com.