I recall that the [very small] quantity of Polonium-210 involved had a market value of $20 Million and was tied directly back to the state atomic agency requiri

I recall that the [very small] quantity of Polonium-210 involved had a market value of $20 Million and was tied directly back to the state atomic agency requiring the personal authorisation of the Commander-in-Chief. So a rather extravagant and blatant way of dispatching someone (with curiously bungling assassins).