"Some Hungarian MPs feel uncomfortable because they have seen how Swedish ministers have made a habit of questioning democracy in Hungary. They have repeatedly insulted Hungarian voters and politicians and thus the whole of Hungary," said Orbán (who is not related to Prime Minister Viktor Orbán).

It is not clear from the article how widespread Orbán's view is or what a Swedish pledge would have to look like, but the statement is reminiscent of previous statements by top Lunger politicians.

As recently as this weekend, Foreign Minister Peter Szijjarto said that the reason why the country had waited so long to approve Sweden's and Finland's NATO entry is that politicians have been tired of "pointers" from the Nordic countries.

Vote on Finland

On Monday, the Hungarian parliament is expected to vote in favour of Finland's entry into NATO. A vote on Sweden is not yet scheduled.

Balazs Orbán says Hungary and Finland have a "unique historical friendship" and that they expect the problems to be solved on that front.

"We seem to have succeeded in getting assurances from the Finns that these problems will not persist in the future," he says – adding that the situation is different when it comes to Sweden.