An extradition treaty doesn't define what is and isn't legal, it defines under what circumstances a country who is party to the treaty will surrender someone wh

An extradition treaty doesn't define what is and isn't legal, it defines under what circumstances a country who is party to the treaty will surrender someone who is currently sheltering in their territory to face prosecution in another country.[1] So for example some GRU agents came to the UK and attempted to murder a couple of Russian expats using a nerve agent called Novichok[2]. As well as the original targets, three further people were poisoned and had to be hospitalised, one of whom died. Unsurprisingly perhaps Russia won't extradite their millitary intelligence officers back to the UK to face justice. This doesn't change the fact that murder and attempted murder are definitely illegal in the UK. [1] https://www.cfr.org/backgrounder/what-extradition https://www.cfr.org/backgrounder/what-extradition [2] https://en.wikipedia.org/wiki/Poisoning_of_Sergei_and_Yulia_Skripal https://en.wikipedia.org/wiki/Poisoning_of_Sergei_and_Yulia_...