[Turkish President Recep Tayyip Erdogan and European Commission President von der Lane on June 18, the Information Office of the Turkish Presidential Office issued a statement on the 17th local time, saying that Turkish President Recep Tayyip Erdogan spoke on the phone with European Commission President von der Lane on the same day, and the two sides discussed Turkey's relations with the European Union. Erdogan said that strengthening cooperation between the European Union and Turkey will help meet regional challenges, and fair treatment of Turkey and support for Turkey's full membership of the European Union will open up new horizons for bilateral relations, the statement said. Turkey formally applied to join the European Union in 1987, was qualified as a candidate in 1999, and started accession negotiations in 2005, but the negotiation process is fraught with obstacles and has not yet joined the European Union.