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What to know about the Trump Jr. email saga

Ross D. Franklin / AP

We're into day four of the deepening controversy surrounding Donald Trump Jr.'s meeting with a Russian lawyer, which took place after Trump Jr. was promised damaging information, via the Russian government, about Hillary Clinton.

Today's bombshell came when Trump Jr. himself shared emails sent prior to the meeting, in which he responds enthusiastically to the idea of a Russia-aided effort to help his father win. Trump Jr. has now defended himself in a Fox News interview.