Brazil Denies U.S. Extradition Request for Alleged Russian Spy
Wall Street Journal
Sergey Cherkasov had been seen as a possible candidate for a U.S.-Russia prisoner swap to free a Wall Street Journal reporter jailed in Moscow.
https://www.wsj.com/articles/brazil-denies-u-s-extradition-request-for-alleged-russian-spy-e1d1cd77