Two men named as suspects in the poisoning of a Russian ex-spy in the UK have said they were merely tourists. The men, named as Alexander Petrov and Ruslan Boshirov, told the state-run RT channel they had travelled to Salisbury on the recommendation of friends. The UK believes the men are Russian military intelligence officers who tried to kill Russian ex-spy Sergei Skripal and his daughter Yulia in Salisbury last March.