In the year since Alexei Navalny's death, the Russian opposition group he led has become embroiled in the biggest scandal since its founding.

Navalny died yesterday, and many in Russia saw hope die with him. We know why Navalny died — or, rather, was killed — and we know who did it. 

Ilya Yashin, the Russian opposition politician sentenced to eight-and-a-half years in jail by a Moscow court last week for speaking out against the Russian...