The article in question is here: U.S. Spy agency edges into the light after Snowden revalations
http://www.reuters.com/article/comments/idUSBRE97O08120130825
The original article is here (Uk Site): U.S. spy agency bugged U.N. headquarters - Germany's Spiegel
http://uk.reuters.com/article/2013/08/25/uk-usa-security-nsa-idUKBRE97O08B20130825
The story was linked to on Reddit
http://www.reddit.com/r/politics/comments/1l22ie/us_spy_agency_bugged_un_headquarters_reuters_the/
Read the comments in the US version of the article, and there's a handful of comments on Reddit about it, but no one on Reuters seems to be acknowledging that the article has been swapped.
The Reuters website is terrible. Half the time the article content doesn't load and I just get sidebars. (They make money selling their feed to news outlets, not by attracting visitors to reuters.com.) Occam's Razor suggests someone fat-fingered an update, not a conspiracy.