"NATO and NATO allies are playing a key role because we are doing many things to fight ISIL. All NATO allies are part of the anti-ISIL coalition and I think it is of great importance for the coalition that both NATO allies but also many NATO partners are part of the coalition and they can take advantage of the interoperability that we have developed," Stoltenberg said.
The NATO chief said the alliance "projects stability" not only by deploying forces, but by adding to extant defense capacity in the Middle East.
"We have agreed with the Iraqi government to start training Iraqi officers. We will do that first in Jordan and then in Turkey," he stressed.
Stoltenberg listed anti-Daesh cooperation with Tunisia and NATO's long-term presence in Afghanistan.
ISIL or Daesh is a violent extremist group that has seized large areas in Iraq and Syria since 2014 and is notorious for committing many human rights atrocities. Its activities have been outlawed in Russia.
A US-led international coalition has been conducting airstrikes against ISIL in Syria since September 2014, without the approval of the UN Security Council or the Syrian government.
On September 30, Russia began a separate anti-ISIL air campaign in Syria at the request of Syrian President Bashar Assad.