Former ambassador: US ‘rightfully concerned’ chaos in Russia is ‘very dangerous’

Former United States ambassador to Russia John Sullivan on Sunday said the U.S. is “rightfully concerned” that chaos in Russia after the short-lived rebellion over the weekend is “very dangerous.” 
Moderator Margaret Brennan asked Sullivan on CBS News’s “ …Former United States ambassador to Russia John Sullivan on Sunday said the U.S. is “rightfully concerned” that chaos in Russia after the short-lived rebellion over the weekend is “very dangerous.” 
Moderator Margaret Brennan asked Sullivan on CBS News’s “ …