Gates’ memoir is titled “Duty: Memoirs of a Secretary at War.” He’s quoted as saying Biden has been wrong on nearly every major foreign policy and national security issue of the last four decades.
He’s not too swift on stuff here in the US either… especially shot gun advice. The Blaze has a second article here, which hits Hillary Clinton:
“Hillary told the president that her opposition to the  surge in Iraq had been political because she was facing him in the Iowa primary. . . . The president conceded vaguely that opposition to the Iraq surge had been political,” Gates writes, noting he found it “remarkable,” according to the Washington Post.