Not just assassination attempts, but also attempts to undermine his power in general. There was a plan to plant thallium salts in his shoes, which would get abs

Not just assassination attempts, but also attempts to undermine his power in general. There was a plan to plant thallium salts in his shoes, which would get absorbed by skin and cause his facial hair to fall out. The hope was that this would lead people to believe that he was sick, and his authority would be weakened.