Stony-faced and resolute, Yulia Navalnaya on Monday picked up the baton from her late husband Alexei with a call to action for Russia's opposition after years in his shadow. In a dimly lit room, her light blond hair tied in her usual bun, the 47-year-old addressed the opposition that has been left leaderless after Navalny's death. "I call on you to stand by me," she said in a powerful nine-minute video that gathered around two and a half million views in a few hours.