Separatists occupy the administration building in the eastern Ukrainian city of Donetsk. Pro-Ukraine bloggers and activists say they've had to leave eastern cities because of threats and surveillance by separatists. Fabio Bucciarelli/AFP/Getty Images hide caption

itoggle caption Fabio Bucciarelli/AFP/Getty Images

A woman casts her ballot at a polling station on May 11 in Hartsizk, Ukraine. Pro-Russian separatists are claiming independence after the referendum in cities across eastern Ukraine. Brendan Hoffman/Getty Images hide caption

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Russian President Vladimir Putin, shown speaking on TV last month, has signed a measure that would impose a host of restrictions on Internet companies and users. Alexey Nikolsky/RIO Novosti/Kremlin pool/EPA/Landov hide caption

itoggle caption Alexey Nikolsky/RIO Novosti/Kremlin pool/EPA/Landov

Ukrainian soldiers stand at a checkpoint they seized Friday morning in the eastern Ukrainian village of Andreevka. The Russian government has referred to Ukraine's interim government and other Ukrainian groups as "fascists" and "neo-Nazis." Vasily Maximov/AFP/Getty Images hide caption

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Ukrainian soldiers watch a helicopter fly overhead outside the eastern town of Kramatorsk. Under Moscow's proposal for Ukraine's constitution, the east and other regions would be strongly autonomous. Evgeniy Maloletka/AP hide caption

itoggle caption Evgeniy Maloletka/AP