VIDEO: 'Co-operation with US is important'

Turkey is carrying more air strikes on bases in Iraq of the Kurdish separatist organisation, the PKK.

The attacks which began overnight are the first since a ceasefire agreement in 2013.

Turkish Foreign Minister Mevlut Cavusoglu said areas of northern Syria cleared of IS fighters would become natural "safe zones".

Turkey has also said it will let the US use a key airbase to attack IS targets.