The United States has called for a joint investigation into the nerve-agent attack on a Russian ex-spy and his daughter in Salisbury, England. Washington says it's still waiting for the Organization for the Prohibition of Chemical Weapons to finish its investigation into the attack.
The diplomatic war against Moscow has escalated, with at least 144 Russian diplomats expelled by 25 western nations and NATO. Luxembourg on Wednesday says it will recall its ambassador to Moscow for consultations in the context of the Salisbury attack. While Montenegro moved to expel a Russian diplomat.