French President Emmanuel Macron has paid an unscheduled visit to Saudi Arabia amid an escalating crisis between the kingdom and Lebanon.

His trip comes days after Lebanese PM Saad Hariri resigned while in Riyadh, saying he feared for his life.

Foes Saudi Arabia and Iran have accused each other of fuelling instability in Lebanon and the wider region.

Mr Macron and Saudi officials also discussed the crisis in Yemen, where Riyadh is leading a war against rebels.