"We have bilateral agreements on extradition of criminals, but which one of these have you actually complied with?" Mr. Erdogan asked at a southeast European summit meeting in Istanbul.
The Uzans will be extradited from Turkey to Britain under the European Convention on Extradition.
Russia's rulers refuse, citing a constitutional ban on extradition.
A spokeswoman there, Jaclyn Lesch, said the department did not comment on extradition matters.
Rosso said a hearing on extradition to the United States would be held next month.
European cooperation on extradition is essential; extradition without basic safeguards is unacceptable.
A government decree on extradition was declared unconstitutional last week by the Constitutional Court.
Mr. Borodin's lawyers expect the next hearing on extradition sometime in mid-April.
But human rights groups have argued that the drafting of the law on extradition is a delaying tactic.
The judge will now investigate the case and then make a recommendation on extradition to a three-judge panel.
Naturally, much of the recent focus has been on extradition to the US, but what about other countries?
