Coming up on 'This Week'… George Mitchell and King Abdullah II of Jordan -- EXCLUSIVE

WASHINGTON, May 20, 2011— -- As President Obama outlines a way forward for peace talks between Israelis and Palestinians, a lead American diplomat in the region resigns – and talks exclusively to "This Week." In his first interview since leaving office, the former Special Envoy for Middle East Peace George Mitchell sits down with Christiane Amanpour. Why did he walk away from the negotiations? Does he think there is any hope for a peaceful resolution in that region any time soon? An exclusive look at Obama's Mid-East peace plan from the man who chose to walk away, only on "This Week."

Plus, "This Week" analyzes the impact of President Obama's speech on Middle East policy with former Middle East negotiator Aaron David Miller and ABC's Senior White House Correspondent Jake Tapper. How bold was this statement by the Obama administration? How will the world react?

Next, Newt Gingrich has a rocky start on the campaign trail, stumbling over comments on the Paul Ryan budget plan, dodging questions about his family's Tiffany's jewelry debt, and getting attacked with glitter in Minnesota. As he backs over his own words, can he get his bid for the presidency moving in the right direction? Our powerhouse roundtable with George Will, political strategist Matthew Dowd, Democratic strategist Donna Brazile and ABC News Senior Political Correspondent Jonathan Karl examines whether Gingrich's campaign can survive. Also, former Utah Governor Jon Huntsman tests Republican waters in New Hampshire, but will has last job working as an ambassador for the Obama administration sink his shot at the G.O.P. nomination? The roundtable surveys the 2012 landscape and looks at all the week's politics.

And the scandals everyone is talking about: Whether it's the IMF director, the former senator from Nevada or the former governor of California, powerful men have proven that the biggest career troubles can be of their own making. Power, sex and politics take center stage as "This Week" unravels these salacious scandals and their potential fallout with the author of "Le Seduction" Elaine Sciolino, Michelle Cottle of "The Daily Beast" and "Newsweek," and ABC's Cokie Roberts and her husband, journalist Steve Roberts.