The Swedish and Finnish NATO Process is expected to take weeks.
The brake pad is Turkey, which has been criticized for its countries' connection to "terrorists" in the organizations YPG and PKK.
Several analysts now believe that the NATO game is more of a studied political strategy.
- Turkey is trying to use the situation to gain a hearing for nationalist undercurrents at home.
This arouses strong feelings and there is strong support, says Tomas Thorén, SVT's correspondent in Turkey.
Access to combat aircraft
Stefanie Babst, former head of NATO's public diplomacy, is on the same track.
- He has a choice ahead of him and Turkey's economy is pretty lousy.
He wants to show proof of leadership and that he is a leader, she said in SVT's Agenda.
Erdogan is also said to want to put pressure on the United States - which, like Sweden, has introduced arms sanctions against Turkey.
- There is speculation as to whether this is about getting the United States to ease the sanctions, and thus gain access to the F16 fighter aircraft, says Tomas Thorén.