National Security Adviser John Bolton on Monday said the Trump administration wants to put “unprecedented pressure” on Iran, but their policy is not regime change.

Sen. Lindsey Graham (R-S.C.), however, is advocating for regime change.

On “Fox News @ Night,” Graham praised Trump for re-imposing some sanctions on Iran that had been suspended under former President Barack Obama’s 2015 nuclear deal, saying the president is “on the right track.”

He said he believes if the U.S. limits the regime’s cash flow and lends moral support to the Iranian people, Supreme Leader Ayatollah Ali Khamenei will collapse.