Russia 'will block' Google, Twitter and Facebook if they withhold blogger data

Kremlin demands internet services comply with its laws, which require official registration of bloggers with more than 3,000 readers a dayRussia’s media watchdog has written to Google, Twitter and Facebook warning them against violating Russian internet laws and a spokesman said they risked being blocked if they did not comply.Roskomnadzor said it had sent letters this week to the three US-based internet companies asking them to comply with laws that critics of President Vladimir Putin have de