In 2012, Russia's then-chief of general staff, Gen.

WSJ: Eliot Cohen: American Withdrawal and World Disorder

Mrs Kelley also knew the top US general in Afghanistan, Gen John Allen.

BBC: Ex-CIA boss David Petraeus sorry for 'inflicting pain'

General Stan McChrystal, Gen Petraeus' predecessor as Nato commander in Kabul, also suffered a public fall from grace in 2010, stepping down after staff members were quoted by Rolling Stone magazine being critical about the Obama administration.

BBC: Petraeus' downfall - a modern morality tale