Former President Barack Obama discusses political purity during the third annual Obama Foundation Summit in Chicago.
원문출처 : https://www.cnn.com/videos/politics/2019/10/30/barack-obama-on-political-purity-obama-foundation-summit-chicago-sot-ctn-vpx.cnn
원문출처 : https://www.cnn.com/videos/politics/2019/10/30/barack-obama-on-political-purity-obama-foundation-summit-chicago-sot-ctn-vpx.cnn