France, the Netherlands, Austria, Finland and Hungary could leave.
Front National leader Marine Le Pen has pledged to hold a French referendum if she emerges victorious in next year's presidential elections.
While for the past two months a Nexit has been on the cards after Dutch voters overwhelmingly rejected a Ukraine-European Union treaty
Details of Berlin's concerns were outlined in a finance ministry strategy document.
Angela Merkel's country faces having to pay an extra £2.44billion a year to the annual EU budget once Britain has left .... http://www.express.co.uk
