RT stated on January 2014 that
Revelations made possible through documents leaked by former contractor Edward Snowden could cause the deaths of United States diplomats, citizens and soldiers, government officials said
Business Insider claimed in November 2013 that if certain documents obtained by Edward Snowden, then (still?) unreleased were released, "and were they to contain the names of field agents, case officers, or station chiefs, the results would be disastrous."
In October of 2013, the Wall Street Journal published an article with the title NSA Chief: Snowden Leaks Will Cause Deaths. (I'm not a subscriber, so I can't read the whole article.)
Years later, are there any verifiable deaths related directly to The Guardian's publication of the US Government's secret surveillance programs?