Frank Wisner experienced a breakdown following the 1956 Hungarian uprising.

Evidence

Frank Wisner had the first of several breakdowns in 1956, after the Soviets suppressed the Hungarian uprising. “That’s when he first went nuts,” according to his friend and CIA colleague Tom Braden. — Nicholson Baker, Baseless- My Search for Secrets in the…, 1218

Categorization

• corroborated: 2 independent passages support this claim — Nicholson Baker, Baseless- My Search for Secrets in the…, 1218