Clinton told Goldberg that while she did not want to look backward, “what we know now is incredibly troubling.” She added 2016 was the first time “that we have been attacked by a foreign power and have done nothing.”

“It would be like — I can’t even imagine — I mean, it’s a horrible example, but after 9/11, [if] George W. Bush said, ‘Well, I don’t have time to meet. I don’t have time to worry about this. It was terrible. We feel sorry about it. We’ll rebuild New York and the Pentagon, but we’re not going to worry about it.’ Well at a certain point, that’s what this is turning into. The evidence continues to accumulate,” Clinton said.

Clinton has previously been critical of Trump’s mixed messages on Russia’s election interference and his praise for Russian President Vladi­mir Putin, although Tuesday appeared to be the first time she made a comparison to the Sept. 11 attacks.