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"This Week" covers the latest on the U.S. response to the escalating crisis in Iraq, with retired Army Gen. Carter Ham, former commander of U.S. and coalition forces in Mosul.

Plus, SIM medical missionary Dr. Frank Glover, Jr. and Amb. Robin Sanders, former ambassador to Republic of the Congo and Nigeria, discuss the threat of Ebola in Africa.

And the powerhouse roundtable debates all the week's politics, with ABC News' Matthew Dowd and Cokie Roberts, ESPN's LZ Granderson, and journalist and author Sharyl Attkisson.

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