http://www.vox.com/world/2016/2/12/10979304/clinton-sanders-kissinger
Sanders has a point. While Kissinger deserves real credit for some of America's most important Cold War victories, including Nixon's diplomatic opening to China, he is also responsible for some of its worst atrocities. The carpet-bombing of Cambodia, supporting Pakistan's genocide in Bangladesh, greenlighting the Argentinian dictatorship's murderous crackdown on dissidents all of those were Kissinger initiatives, all pushed in the name of pursuing American national interests and fighting communism.
Now, this may all seem like ancient history in 2016. But Kissinger's legacy is still a subject of wide-ranging, angry debate among American foreign policy experts because it speaks to some fundamental issues about what matters in US foreign policy and the fundamental nature of the foreign policy establishment itself.
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*History, which is really necessary to put this all into perspective.*
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Clinton and Sanders's fight over Henry Kissinger wasn't merely academic history: It speaks to some profound differences in their candidacies, which itself helps explain a major source of Sanders's appeal.
Sanders picked this fight because Kissinger is the Washington foreign policy establishment
The fact that Hillary Clinton and Bernie Sanders are fighting over Kissinger's legacy is revealing for both candidates. Her support for Kissinger shows just how much a part of the Washington establishment she really is, while Sanders's condemnation of the man helps explain his appeal to a lot of liberal voters.
When Clinton first bragged that Kissinger had praised her, she likely didn't see anything wrong with it. She has been in contact with Kissinger for years as Grandin notes, they exchanged emails semi-regularly during her own time in Foggy Bottom.
"At 91 years old, the former secretary of state, national security adviser and intellectual-cum-celebrity has come to occupy a unique place in the foreign policy firmament," Politico's Michael Crowley writes. "He has become a Yoda-like figure, bestowing credibility and a statesmans aura to politicians of both parties, including ones who may not actually share his worldview."
Kissinger's crimes have become an afterthought in Washington even to Clinton, who bills herself as a champion of human rights abroad.
Clinton's decision to embrace Kissinger, like her highly paid speeches to Goldman Sachs, make her look like someone who's too ensconced in the American elite to be truly committed to progressive values. It's everything that many progressives dislike about her.
Which is why it's such a successful line of attack for Sanders. He, unlike Clinton, isn't really part of polite Washington society. His career in Congress hasn't really required him to buddy up with people like Kissinger. He can give voice to progressive concerns about Kissinger and thus about the establishment.
The Kissinger debate, then, isn't just an argument over a 91-year-old diplomat's life and legacy. It's a debate over whether Hillary Clinton is too compromised by her connections to America's elite to be an effective liberal champion. This is one of Sanders's key attack lines on Clinton, but one that he has struggled to connect to her foreign policy positions.
Until Clinton gave him an opening.