Submitted by ub on Wed, 07/15/2015 - 09:41

This American slang term means that it is often the small details of something which make it difficult or most challenging. These details can prolong a task, or foil an otherwise straightforward deals. Like many proverbs which involve the devil, it is meant to sound a note of caution.

This reminder is intended to encourage the scientists to check their work, and to be thorough and careful. Warning: Does a nuclear deal with Iran signify a prelude to war?

Who Got What They Wanted in the Iran Nuclear Deal

BBC News - Newspaper headlines: Iran nuclear deal and 'Pluto on Pluto'

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President Obama will hold a White House press conference later this morning. Stay tuned for live coverage.