Graphic showing Jean Claude Juncker, David Cameron and Angela Merkel
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The job causing a rift in the EU

12 June 2014 Last updated at 06:55 BST

Divisions are developing between European Union countries over who should be offered one the bloc's most important jobs.

German leader Angela Merkel has publicly backed Jean Claude Juncker, the former prime minister of Luxembourg, but Britain says he is unacceptable.

But why does it matter?

Europe correspondent Matthew Price explains.