There is powerful evidence that Vladimir Putin is guilty of the murder of journalists, but it is impossible to “prove” his guilt because there is no police force in Russia that will investigate him and no court where he can be held to account.
Under these circumstances, Donald Trump’s statement (to critics who took exception to the mutual praise between the two men) that there is no proof that Putin is guilty of murder is an absurdity. Proof presumes the existence of a state based on law.
Journalists and human-rights advocates in Russia have long been blocked in their attempts to investigate the murders of their colleagues. The authorities make no serious attempt to bring the persons who ordered the killings to justice, although they may arrest the triggermen. More ominously, when underlings are charged, they turn out to have a maze of connections to the security services themselves.