Russia Working Against U.S. Extradition Efforts of Alleged Hackers

For months, Moscow has pursued what current and former U.S. law-enforcement and diplomatic officials describe as part of a stepped-up and evolving campaign to prevent Russians arrested on criminal hacking charges from being extradited to the U.S. Russia has relied on a variety of techniques — whether leveraging the legal system or resorting to more coercive means, such as bribery — to pressure other countries to impede U.S. extradition efforts, current and former U.S. officials said.