United States Senate

Sen. John McCain, R-Ariz., and Sen. Jack Reed, D-R.I., speak exclusively to ABC News Chief Global Affairs Correspondent Martha Raddatz, Sunday on "This Week."

The debate over Benghazi was reignited this week, as new testimony and newly-revealed emails brought fresh scrutiny to the Sept. 11, 2012 attack. Was enough done to save American lives in the attack? Did political considerations influence the Obama administration's response in the immediate aftermath - and how has politics shaped Republican calls for more information?

Plus, what steps should the U.S. take in Syria? How should Washington tackle the dramatic increase in sexual assault in the military? And will the battle for immigration reform move forward? Sen. John McCain and Sen. Jack Reed weigh in Sunday, only on "This Week."

Then, the"This Week" foreign policy roundtable examines the fallout over Benghazi and Syria, with ABC News' George Will; former Joint Chiefs of Staff Vice Chair Gen. James Cartwright (USMC, Ret.); Washington Post columnist Ruth Marcus; and ABC News Chief White House Correspondent Jonathan Karl, who will cover the latest on his exclusive report on the administration's response to the Benghazi attacks.

And the "This Week" powerhouse roundtable takes on all the week's politics, from continued gridlock in Washington to Chris Christie's weight loss surgery, with ABC News' George Will, Donna Brazile, Matthew Dowd, and Jonathan Karl, plus former Maine Sen. Olympia Snowe, author of the new book, "Fighting for Common Ground."

Plus, in a special Mother's Day Sunday Spotlight, Martha Raddatz speaks with moms on Capitol Hill - Sen. Kirsten Gillibrand, D-N.Y., Rep. Cathy McMorris Rodgers, R-Wash., Rep. Linda Sanchez, D-Calif., and soon-to-be mother Rep. Jaime Herrera Beutler, R-Wash.

See the whole political picture, Sunday on "This Week."

Like "This Week" on Facebook here . You can also follow the show on Twitter here .

Go here to find out when "This Week" is on in your area.