Turkish President Recep Tayyip Erdogan on Wednesday called on world leaders to rally behind Turkey's plan for a safe zone inside Syrian territory, days before it hosts the G20 summit.

Speaking to a group of businessmen in the capital Ankara, Erdogan said the Syrian conflict would be a "major topic" at the G20 summit in the Mediterranean resort of Antalya on Sunday and Monday, AFP reports.

Erdogan has repeatedly pressed for a safe zone inside Syria stretching down from Azaz and Jarablus in the north, which could house some of the 2.2 million Syrian refugees currently hosted by Turkey and act as a buffer to protect Turkish territory.