John Bolton pleads guilty: Former US national security advisor misused classified information

John Bolton has gone from being one of Donald Trump's closest allies to one of his most outspoken critics. On Friday, the former national security adviser pleaded guilty to mishandling classified information, some of which prosecutors say was later used in his memoir, The Room Where It Happened, a book that offered a highly critical account of the Trump administration.

Antonia Kerrigan reports.