Wasn’t nerve gas, it was ricin. Made from the husks of castor beans, highly lethal. A dose the size of a couple of grains of salt can be lethal.
In 1978 a Bulgarian dissident was killed in London. A micro bead with a microscopic amount of ricin was injected into his leg, they believe by shooting it from the tip of an umbrella. He was dead within four days.
This is going to become more common and not just in Europe.
The new normal./not sarc