The Federal Prison Service said in a statement that Navalny felt unwell after a walk on Friday and lost consciousness. The politician's team says it has received no confirmation of his death so far.
The dacha — a Russian summer home that can be anything from a shack to an oligarch's faux chateau — is both an escape from the city and a state of mind that permeates the country's life and culture.
The recently expanded law says that freelance journalists, YouTube bloggers and practically anyone else who receives money from abroad and voices a political opinion can be considered a foreign agent.
John Kerry, the former secretary of state and now President Biden's special envoy for climate, is the highest-ranking U.S. official to visit Moscow since Biden took office.
Russia's cyberwarfare activity was a focus of President Biden's meeting with President Vladimir Putin last month. Analysts say it is the great leveler when it comes to Russia-U.S. competition.