BBC:

Turkish ground troops have crossed into northern Syria as part of Ankara's campaign to rid the border area of Kurdish fighters, Turkey's PM says.

Binali Yildirim said the aim was to establish a 30km (19-mile) "safe zone" deep inside Syria, Turkish reports say.

But the Kurdish YPG militia says it has repelled Turkish troops in Afrin.

Turkish troops, accompanied by pro-Turkey rebels from the Free Syrian Army, have already advanced some 5km (3 miles) into Syrian territory, state-run Anadolu news agency reported. No further details about the 30km security zone were given.

But a spokesperson for the YPG, Nouri Mahmoudi, said the group had managed to repel Turkish troops and they were "forced to retreat".

Turkey's military said it had hit 45 targets on Sunday, as part of its air and ground campaign dubbed "Olive Branch".

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