The Senate Armed Services Committee held a hearing Thursday on whether to confirm Gen. James Mattis as the next defense secretary, and plenty of interesting bits came out of the roughly three-hour session.

The retired four-star general gave frank and concise answers on everything from cybersecurity policy to what he expects will be the biggest threats to the United States.

Shortly afterward, he was approved for a waiver for the requirement of having a seven-year gap between being active-duty in the military and serving in the civilian role at the Pentagon.

Mattis thinks the US needs to be more aggressive going after ISIS

When asked whether the US can confront the terror group in its capital of Raqqa, Mattis said he believed the US could, but he added that the anti-ISIS strategy needed to be reviewed and “energized on a more aggressive timeline.”

He told members that “we have to deliver a very hard blow against ISIS in the Middle East so there is no sense of invulnerability or invincibility there.” For the US, according to Mattis, that means attacking ISIS’ main areas of strength so they cannot pop up elsewhere.

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