The dispute between UK and Russia over the poisoning of an ex-Russian spy in the UK continues to escalate as 23 Russian diplomats are ordered to leave Britain by Tuesday.
In response, Russia expelled the same number of British diplomats. They are expected to leave Moscow in the coming days. Earlier, Putin's office said the "unsubstantiated" allegations against Russia surrounding a nerve agent attack will have to be answered for, either with evidence or an apology. However, British Prime Minister Theresa May reiterated her claim that Russia was responsible.