Nuclear attack?
Clinton supports the Iran deal and her husband is the reason north Korea has nukes.
What are you referring to?
As for the other example, Im not sure how it matters? I don't see trump as sharing the views of duke at all. Except regarding immigration perhaps there is overlap.
I mean in terms of policy how is he worse than mccain?
In terms of what I mentioned, this is related to John McCain vs. Donald Trump. I agree with you that the Clintons are an epic disaster on Nuclear weapons.
Donald Trump is comfortable with many countries getting Nuclear Weapons, including Saudi Arabia. That by itself is a reason I'm not comfortable voting for him.
Though Trump probably doesn't share David Duke's views, Trump's presence as a candidate and eventual Republican Nominee has led to an ' alt right'/ neo Nazi movement becoming part of the Republican landscape. These same individuals for the most part didn't vote for John McCain in 2008. Trump's candidacy has led to major growth for their movement.
The bottom line is both of the two major party Presidential candidates are extremely dangerous. McCain was the lesser of the 2 evils in 2008. I don't think there is a lesser of the 2 evils in 2016.