The NATO chief on Monday said they aim to “make progress” on Finland and Sweden’s membership bids ahead of the Madrid summit.

“We also aim to make progress on Finland and Sweden’s historic applications for NATO membership, while ensuring the security concerns of all allies are addressed. I spoke with (Turkish) President (Recep Tayyip) Erdogan on Saturday, and I will meet with the (Swedish) Prime Minister (Magdalena) Andersson later today,” Jens Stoltenberg told a pre-summit press conference in Brussels.

Stoltenberg said NATO needs “to take into account the concerns expressed by allies, in this case by Türkiye. And that’s the reason also why we have intensified the dialogue with our ally and with Finland, Sweden over the last weeks.”

Finnish and Swedish leaders will meet Turkish President Recep Tayyip Erdogan in Madrid on Tuesday, the NATO secretary-general said. The four-way meeting, which will also include Stoltenberg, will be preceded by “another meeting of senior officials from all three countries” at the NATO headquarters on Monday.

“Our NATO summit in Madrid will be transformative with many important decisions, including on the new strategic concept for a new security reality,” he said.

Stoltenberg said NATO “will transform the NATO Response Force and increase the number of our high readiness forces to well over 300,000.”