Sunday on State of the Union

Malaysia Airlines Flight 17 was "likely downed by a surface-to-air missile ... operated from a separatist-held location in eastern Ukraine." Candy talks to Secretary of State John Kerry.

And, if pro-Russian separatists are responsible for shooting down the plane, how should the U.S. respond? We'll talk to Senate Intelligence Committee Chair Dianne Feinstein and the House Homeland Security Committee Chair Michael McCaul.

Then, will it be a game changer for U.S.-Russian relations? We’ll talk to The Atlantic’s Peter Beinart, Michael Crowley of TIME magazine, NPR’s Steve Inskeep and CNN commentator L.Z. Granderson.

Plus, Robert Turner, Director of the United Nations Relief and Works Agency in Gaza City on the relief efforts in Gaza.

Watch Sunday 9am and Noon Eastern on CNN.