Robert Gates on President-elect Trump's potential Cabinet, national security

CBS News Videos

In our "Issues That Matter" series, we explore the challenges facing our country. In September, former Defense Secretary Robert Gates voiced serious concerns about Donald Trump, writing that Trump was "unqualified and unfit to be commander-in-chief." In his first interview since the election, Gates joins "CBS This Morning" to discuss the national security issues facing the now-President-elect Trump.