Former U.N. Ambassador Samantha Power Has a Lot of Stories to Tell--and No Problem Talking

“I believe in oversharing,” says Samantha Power. She’s not kidding. Her answer to the journalistic equivalent of a warm-up pitch–So how’s teaching going?–is 16 minutes long and touches her views on geopolitics, Ebola, diplomacy, Facebook, President Trump, President Obama, U.S. leadership, the importance of expertise, disillusionment and optimism in the Harvard student body, the U.N.,…