Austrian election sets Europe's nerves on edge

The decision by Austria’s Constitutional Court to annul the outcome of the May presidential election has unsettled pro-European officials and politicians across the EU who fear that, after Britain, Austria could be the next country to turn its back on the European Union.

The rerun of the second round, which will be held on 2 October, has revived the spectre of an elected far right head of state in Europe for the first time since the...