Cameron warns EU not to back Juncker

British Prime Minister David Cameron has warned he would no longer be able to guarantee that Britain would remain a member of the European Union if European leaders elect Jean-Claude Juncker as European Commission chief, Germany’s Spiegel said.

The European Commission president is selected by EU leaders but must be approved by the assembly. The European People’s Party, which won the most seats in the vote, had chosen Luxembourg’s ex-premier Juncker as their candidate.

In a pre-publication copy of an article, Spiegel said Cameron had explained, on the sidelines of an EU summit in Brussels tomorrow, that if Juncker became Commission president, he would no longer be able to ensure Britain’s continued EU membership.