What is the situation in this country?
Litvinenko wasn’t a spy. He was a low-ranking part of domestic KGB branch and his duty was to push fight ethnic gangs in Moscow metro area. He actually used his position in using muslim gangs to bully businesses competing with his buddy and future boss Berezovski - a notorious robber baron Rasputin of the 1990s who had strong ties with Soros.
My understanding is that polonium is so hot that the salad bowl he used was easily found with radiation detectors weeks later, even after being washed in the restaurant’s kitchen dishwasher many times. It was so radioactive from the brief sprinkling of polonium, that it contaminated other dishes that were stored next to it for any time.