Seven Turkish soldiers have been killed in the operation against Kurdish fighters in northwest Syria, the highest daily toll for Turkey since it launched the offensive last month.

Five of the soldiers were killed in an attack on a Turkish tank while two others were killed earlier the same day in separate clashes, the Kurdish news portal Rudaw reported, citing the Turkish military.

Turkish Prime Minister Binali Yildirim vowed to make the militias “pay for this twice as much”.