And Reagan also had the Iran Contra controversy which was selling arms to Iran to fund the Contras in Nicaragua. When asked in a deposition about what he knew, Reagan famously said, "I don't remember". It may have been a legal tactic to avoid culpability, but it could also have been real and highlighted the man's cognitive decline. Or worse, his advisors knew about the cognitive decline, kept information from him, and then ran their own foreign policy in the basement of the pentagon.