senior

Senior positions are held by Islamic clerics.

Many of the senior clerics, like Khamenei or Khomeini, you notice that they all wear black turbans.

AMNA NAWAZ: Joel Anderson, senior staff writer at The Ringer and former host of Slate's "Slow Burn" podcast, thank you so much.

Just wanted to read you this quote from Lauren Marcellus, CBS senior VP of late night current programs.

He's a senior staff writer at The Ringer and a former host of Slate's "Slow Burn" podcast, including a season on the murders of Tupac Shakur and the rapper The Notorious B.I.G.

For more on the reaction to the Iran deal, let's go live to our senior foreign correspondent, Josh Johnson.

To look at what this means and what it doesn't, as well as how to best use polls, I'm joined by Courtney Kennedy, senior vice president of U.S. affairs at Ipsos.