The European Commission has sent a letter to Facebook's head of global affairs advising the platform to rethink its rules aimed at protecting elections from foreign interference, according tothe Guardian. In an attempt to tackle foreign intervention in elections, Facebook has implemented new rules requiring political advertisers to register in the country that is the target of the campaign. The EU believes that these rules will prevent European political groups from advertising cross-countries campaigns for the European elections in May. The EU recognises Facebook's liability when foreign entities illegally interfere in national and regional elections. However, it also believes the new rules do not work in the EU and may breach EU laws.