1. You're not supposed to do that on foreign soil.
2. If you're going to do that, just stab or quietly eliminate the guy, the agent they used was wildly dangerous and sent more than just the target to the hospital.
Which was Russia's intention: to set an example.
You know the daughter lived in Moscow and her father wanted to return to Russia to be with his only surviving family?
Really NOT seeing Putin’s hand in a botched foreign operation that could have been handled at home
Only time novichok was used to kill was by a Latvian mafia hit. They purchased the agent from a scientist who sold it to others