Greek-Turkish Border

'Unfortunately, Alexandroupolis is not just one base – all of Greece has been transformed into a US base. I did not manage to count how many American bases there are in Greece,' Erdogan said.

'Indeed, these are extraordinary circumstances. And we have just been to the border area and have seen how tense and how difficult the situation is. The Greek authorities are facing a very difficult task in containing the situation.,' said European Commission President Ursula von der Leyen.

'There is great pressure at the Evros border. At the same time, direct communications on site between the Greek and Turkish sides has been cut off, further aggravating the problem,' said one Greek public order ministry official.