with Watergate, It was the cover up, not the crime, that led to Trick Dick's resignation.
In this case, it is not the issue that Woodward is addressing that is the problem here, it is the Obummer Admin's response. The verbal threat.
Woodward and Bernstein's lives were threatened during Watergate too, but they peristed. If this story explodes....it could lead to impeachment. And it should.
And, I don't think Woodward is skeered...they can't touch him now after making the threat....and Woodward knows it.
Spread it far and wide.