Ursula von der Leyen, the European Commission President (Image: GETTY) "Without the UK, Sweden would lose its most important ally in the EU and the possibility of getting important issues through the system would diminish." Ms Danin also admitted that Brexit could lead to calls for Swexit - Sweden's version of an EU exit - as it sees the UK outside of the bloc. This prediction was also offered by Sweden's then-Deputy Prime Minister Margot Wallstrom, who warned a vote for Brexit "could break up the entire union". Speaking on the BBC's This Week's World, the Swedish Social Democratic Party member said: "That might affect other EU member states that will say, 'Well, if they can leave, maybe we should also have referendums, and maybe we should also leave."