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Retired Gen. John Allen, the Special Presidential Envoy for the Global Coalition to Counter ISIS, discusses the battle with ISIS, only on "This Week" Sunday.

Then, George Stephanopoulos goes one-on-one with Sen. Ted Cruz, R-Texas, about the latest developments overseas and the race for 2016.

And the powerhouse roundtable debates all the week's politics, with Echelon Insights co-founder and Daily Beast contributor Kristen Soltis Anderson, CNN political commentator Van Jones, and Mark Halperin and John Heilemann, managing editors of Bloomberg Politics and hosts of "With All Due Respect."

Plus, former Sen. Rick Santorum and his wife Karen discuss their new book about their daughter, "Bella's Gift."

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

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

NOTE: For those viewers in the following affiliates, "This Week" will air at a different time on Sunday. See times below.

KOMO, Seattle, 4:00 pm; KXTV, Sacramento, 6:00am; KATU, Portland, 4:00pm; KGTV, San Diego, 3:30pm; KTNV, Las Vegas, 3:00pm; KFSN, Fresno-Visalia, 3:00pm; KEZI, Eugene, 3:00pm; NSBW, Monterey, 4:00pm; KERO Bakersfield, 3:30pm; KDRV, Medford, 3:00pm; KESQ, Palm Springs, 8:30am