Julija Navalnaya calls for a joint fight against the Russian regime. She still lacks confirmation of her husband's death.

Putin must be held “personally responsible” for the case, she says. The cause of the 47-year-old's death is unclear and is still being investigated. The news of Navalny's death sparked international outrage, with sharp accusations against Russian leadership from Western countries. (Read the current developments in the live blog here). aeh/AFP/dpa.