Estonia says the country's websites have been under heavy attack for the past three weeks, blaming Russia for playing a part in the cyber warfare.
Many of the attacks come from Russia and are being hosted by Russian state computer servers, Tallinn says.
Estonia says the attacks began after it moved a Soviet war memorial in Tallinn. The move was condemned by the Kremlin.
It says that instructions on how to carry out cyber warfare are circulating in Russian on Russian websites.
Moscow denies any involvement in the internet attacks on its neighbour.
clipped from: news.bbc.co.uk 
