A day after Finland and Sweden signed the accession protocol to join Nato on Tuesday, five of the 30 member states-Norway, Denmark, Canada, Iceland, and Estonia-have ratified the two countries joining the alliance.

Norway, Denmark and Canada all approved the membership of the two new Nordic members on Tuesday-the day the accession protocol was signed.

All three countries' foreign ministries sent their wishes to Finland and Sweden on social media and hoped for a swift ratification process from their fellow Nato allies.

The following day, Wednesday, added Estonia and Iceland to the list of ratifiers.

"Estonia is among the first to seal the deal and did so with lightning speed. I count on a speedy process from all Allies," the Estonian Prime Minister Kaja Kallas commented in a tweet.

There are now 25 remaining member state legislatures that need to approve Finland and Sweden joining the alliance and there are some lingering concerns that it will not be as smooth as the first five ratifications.

Even though the Turkish government approved Finland and Sweden to be invited to Nato, the decision still needs to pass through the country's parliament-as there is some uncertainty over the trilateral agreement signed by Turkey, Finland and Sweden at the Madrid summit last week.