Turkish President Recep Tayyip Erdogan warned the European Union that Ankara will walk away from its long-running membership process if new accession chapters are not opened

The “Chapters” are the policy areas that are being addressed in the long-running membership talks.

Sixteen chapters have been opened out of a total of 35 since accession talks began in October 2005, although turkey’s bid to be a part of the bloc dates back to the 1960s.

The latest chapter was opened in June 2016 on financial and budgetary provisions while one chapter which is science and research has been provisionally closed.