On a new episode of Media Matters Radio, Saturday, June 23, 2012, hosts Ari Rabin-Havt and Bradley Herring bring you the major stories of the week in conservative media. You can listen on SiriusXM Left channel 127 every Saturday morning 10 am to 1 pm ET, 7 am to 10 am PT. It is rebroadcast in full Sundays 4-7 pm ET, 1-4 pm ET. You can follow the show on Twitter @MMFARadio.

Tomorrow's guests include:

Efraim Halevy -- former chief of the Mossad discusses if Iran really is an existential threat to Israel and how best to engage with Iran.

Sister Simone Campbell -- Executive Director of NETWORK and spokeswoman for Nuns on the Bus talks about the multi-state tour and what it means to be a religious feminist.

Moustafa Bayoumi -- professor at Brooklyn College breaks down his new article, "Fear and Loathing of Islam," in The Nation magazine's July 2/9 special issue.

Ryan Reilly -- reporter/blogger for TPMMuckraker analyzes the Fast & Furious conspiracy theories and Attorney General Eric Holder's contempt citation.

Domenic Powell -- field organizer for Center for New Community looks at how the media fail to properly cover the issue of immigration and undocumented workers.

Eric Boehlert -- Senior Fellow of Media Matters for America fills us in on President Obama's many “Watergates”.

And, as always, Media Matters' National Press Secretary Jess Levin presents “The Week in Media,” and Media Matters' Senior Vice President Katie Paris delivers the latest in progressive messaging in the “Message Matters” segment.

(guest list subject to change)

MSNBC's Chris Hayes joined the show last week to discuss elitism and its impact on the media.