"And the focus now is on reforms. And I welcome that Ukraine has so clearly stated that their focus now is on reform, and then based on the progress they're making on reform, then of course the issue of membership will be assessed based on the progress Ukraine is making," he said.
Stoltenberg says there is "a very strong partnership" between Ukraine and NATO.
"And NATO provides strong political support, strong practical support to Ukraine. And NATO Allies also provide support on a bilateral basis. And we encourage and we welcome all that. So we'll continue to strengthen our partnership, we'll continue to work with Ukraine," NATO chief said.