https://en.wikipedia.org/wiki/Secretary_General_of_NATO

Dutch Prime Minister Mark Rutte is an early favorite to take over as NATO chief after he signaled interest over the weekend — but he's going to have to overcome his country's patchy record of defense spending as well as his own sex to snag the job.

Governments have so far been officially mum about a Rutte candidacy, but three senior European officials, granted anonymity to speak freely, said he's expected to garner wide support. One of them predicted he'll be backed by the eastern flank countries, for whom the top issue is a candidate's stance on Russia and Ukraine.

More info: https://www.politico.eu/article/dutch-pm-mark-rutte-nato-top-job-zelenskyy-stoltenberg/