Sunday on “This Week,” ABC News provides live coverage of Hurricane Harvey’s impact and aftermath. And George Stephanopoulos goes one-on-one with White House Homeland Security and Counterterrorism Adviser Thomas Bossert on the government’s emergency response.

Plus, former U.S. Ambassador to the U.N. and to Afghanistan Zalmay Khalilzad and former U.S. Ambassador to NATO Douglas Lute discuss President Trump ’s new Afghanistan strategy.

And the Powerhouse Roundtable debates the week in politics, with ABC News political analyst Matthew Dowd , host and managing editor of “News One Now” Roland Martin , Associated Press Washington bureau chief Julie Pace , former Obama State Department spokesperson and CNN contributor Jen Psaki , and ABC News contributor and Newsmax Media CEO Christopher Ruddy .

See the whole political picture, Sunday on “This Week.”

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