Istanbul Atatürk Airport airport was originally named "Yeşilköy Airport". In the 1980s, it was renamed "Istanbul Atatürk International Airport" in honour of Mustafa Kemal Atatürk, the founder and first president of the Republic of Turkey. It served more than 60 million passengers in 2015, making it the 11th-busiest airport in the world in terms of total passenger traffic and the 10th-busiest in the world in terms of international passenger traffic. As of 2017, it is Europe's 5th-busiest airport after London Heathrow, Paris Charles de Gaulle, Frankfurt Airport and Amsterdam Schiphol Airport, having fallen from third place after a decline in passengers due to
Accession of Turkey to the European Union European Parliament, equal to Germany's. If Turkey were to join the European Union, Istanbul would become the most populous metropolis in the EU. Cyprus was divided when, on 20 July 1974, Turkey invaded and occupied a third of the island in response to an Athens-engineered coup aimed at annexing Cyprus to Greece. Since then, Turkey has refused to acknowledge the Republic of Cyprus (an EU member since 2004) as the sole authority on the island, and recognizes the self-declared Turkish Republic of Northern Cyprus since its establishment in 1983. The Turkish invasion in 1974 and the resulting movement of refugees