U S President Trump names John Bolton as new national security adviser

U.S. President Trump's national security adviser is resigning. The announcement came late Thursday. Donald Trump said he'll replace H.R. McMaster with John Bolton, the former U.S. ambassador to the United Nations. CGTN's Roee Ruttenberg has more.

(Source: CGTN America, https://www.youtube.com/watch?v=8lXj5ioSb-A)