We are sorry, you need to be a subscriber to watch this video

We are sorry, you need to be a subscriber to watch this video

Theresa May is preparing a cyberwar against Russia’s spy network after accusing two of its agents of carrying out the Salisbury nerve agent attack.

Serving notice of new covert operations against the Russian military intelligence service, the prime minister said that it was a threat to “all our allies and to all our citizens” and she promised to do “whatever is necessary to keep our people safe”.

In a Commons statement yesterday Mrs May named two members of Kremlin military intelligence as key suspects in the poisoning of the former Russian spy Sergei Skripal, 67, and his daughter, Yulia, 34, with a nerve agent on March 4. The prime minister drew gasps from MPs when she revealed that Britain’s security and intelligence services had established…