Russia has asked diplomats from the Baltic states and Slovakia to leave the country amid a flurry of expulsions. It comes as Moscow prepares a list of “unfriendly nations” whose embassies will be subject to greater restrictions. Reuters reports that Moscow and Prague are locked in their biggest row since the end of the Communist era in 1989, which has spiralled into a series of diplomatic disputes with other European Union and NATO countries as Russia’s ties with the West linger at post-Cold War lows.