The Russian poisoning attacks were not terrorism, they were state sponsored acts of revenge for past acts.

It’s absolutely murder and attempted murder violating the UK’s espionage acts but I don’t see how that can be stretched into the WOT.

These kinds of poisonings were fairly commonly committed by the KGB during the CW era and I can’t remember anyone claiming they were acts of terrorism.

The laws may have been changed enough for it to qualify in the intervening years but man, that’s a stretch if it has.