The second study was led by Graham H. Diering, a postdoctoral researcher at Johns Hopkins University.
第二项研究由约翰霍普金斯大学博士后研究员格雷厄姆·H·迪林（Graham H。
He was previously Dean and Professor of International Relations at the Paul H. Nitze School of Advanced International Studies (SAIS) of the Johns Hopkins University.
他过去曾担任约翰•霍普金斯大学保罗•h•尼采高级国际研究学院(SAIS)院长和国际关系教授。
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