"No ally has suffered more terrorist attacks than Turkey. They are important in the fight against Daesh. They are the only ally which is bordering Syria and Iraq," he said, using the Arabic acronym for ISIL.

Axar.az reports that Stoltenberg's remarks came during a speech at the European Parliament in Brussels.

He added that the progress and achievements NATO has made in that fight would not be possible without using Turkish bases and infrastructure.

Stoltenberg said NATO is also extending support to Operation Sophia in the Mediterranean to crack down on refugee smuggling routes.

"Actually we could do more to provide support if that is requested or called for by the EU, for instance, to help implement the arms embargo against Libya," he said.

Stoltenberg reiterated the importance of the transatlantic bond between Europe and North America.