Marina Litvinenko does not believe that Russian president Vladimir Putin will extradite the man named by prosecutors as the main suspect in the death of her husband.
Andrei Lugovoy, now a politician in Russia, was named by prosecutors as the main suspect in the case, but Marina Litvinenko said she thought it was unlikely that he would change his mind and extradite him.
Speaking to reporters she said: "I believe Putin will not change his decision to extradite or change his decision."
She added: "What I do is not against Russia because I am Russian and I love my country."
More top news
The Republican presidential candidate's Hollywood Walk of Fame star has been vandalised again.
Ukip has "formally reprimanded" Mike Hookem over a scuffle with colleague Steven Woolfe which landed the latter in hospital.
Popular cleaning products promoted as being fine to be flushed doing the toilet are being blamed for clogging drains and causing floods.