How is turkey playing its cards in this Sweden Finland NATO membership game

Sweden and Finland on Tuesday pushed ahead with their bids to join NATO even as Turkey insisted it won’t let the previously nonaligned Nordic countries into the alliance because of their alleged support for Kurdish militants. Turkish President Recep Tayyip Erdogan’s strongly-worded objections caught the two applicants and other NATO members off guard, complicating what was envisioned to be a swift expansion of the alliance in the wake of Russia’s invasion of Ukraine.