Labour MPs should not appear on Russia Today, says John McDonnell

John McDonnell has said Labour MPs should no longer appear on Russia Today, in the wake of the nerve agent attack on former spy Sergei Skripal.The home secretary, Amber Rudd, has said it is too early to say who is responsible for the attack on Skripal and his daughter, Yulia, but with fingers pointing at the Kremlin, UK politicians are coming under increasing pressure to stand up to Russia.