PwC’s work for Russian billionaires is part of a global system of enablers who, at a time of war, have undermined Western efforts to hurt Russian oligarchs financially and to sow discontent with Putin in their ranks.

Documents reveal a striking — and ultimately troubling — willingness to provide accounting, audits and other services to the secret offshore networks controlled by members of Putin’s inner circle and others who have contributed directly to his Ukraine war effort. Since Russia began its assault on Ukraine by invading Crimea in 2014, PwC Cyprus has worked for a Russian-controlled energy firm operating there, the owner of a major Russian military contractor and the family of a Russian military strategist.