Amanpour: Michael Kergin, Richard Dalton, Barbara Slavin, Ervand Abrahamian and Daniel Fessler

Speaking at a candlelit vigil in Toronto to mourn the victims of the Ukrainian plane crash which killed all 176 on board, including many Canadian and Iranian nationals, Canadian Prime Minister Justin Trudeau said that Canadians "deserve answers." To discuss this tragic human cost of this diplomatic drama, Christiane Amanpour speaks with Canada's former Ambassador to the U.S Michael Kergin. Richard Dalton, former British Ambassador to Iran, and Barbara Slavin, the Atlantic Council's top Iran expert, talk about the urgent need for diplomacy to ease tensions between the U.S. and Iran. Ervand Abrahamian, historian and Iranian-American author of "The Coup", digs down into the turbulent and complex relationship between the two nations that goes back decades. He sits down with our Walter Isaacson and looks back at the Iranian revolution and the hostage crisis of 1979. In a world filled with violence and polarization, Daniel Fessler, anthropologist and director of the UCLA Kindness Institute, explains the need for more kindness in the world.

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