A still image taken from a video released by the RT TV shows two Russian men who say they are Ruslan Boshirov (left) and Alexander Petrov. British police accuse the pair of being intelligence officers who tried to kill former KGB spy Sergei Skripal.

A still image taken from a video released by the RT TV shows two Russian men who say they are Ruslan Boshirov (left) and Alexander Petrov. British police accuse the pair of being intelligence officers who tried to kill former KGB spy Sergei Skripal.