Several right-wing populist parties from different countries want to work more closely together in the European Parliament in the future and coordinate votes.
They agreed on this on Saturday at a meeting in Warsaw.
The representatives of the around 15 participating “patriotic” parties could not agree on a formal alliance, however.
Poland's Prime Minister Mateusz Morawiecki as host, Hungary's Prime Minister Viktor Orban and the French right-wing populist and presidential candidate Marine Le Pen took part in the two-day meeting.
In a joint declaration, it was stated that the parties in the EU Parliament are planning, among other things, "joint meetings and agreements on votes" in the future.
An amalgamation of the parties in the EU Parliament, which was sought by Le Pen and others, did not materialize, however.
Nevertheless, the French spoke of "important progress" on Saturday.
You still hope for the formation of a common group, which would then be the second strongest force in the EU Parliament.
This is all the more important in view of a "German coalition that will increase the pressure on our countries when it comes to migration," said Le Pen.
Le Pen's colleagues from the Rassemblement National and the Italian Lega are currently part of the right-wing populist faction Identity and Democracy, to which the AfD also belongs.
Other parties gathered in Warsaw, on the other hand, are part of a second group critical of the EU, the European Conservatives and Reformists (ECR).
Orban's Fidesz party, on the other hand, had long belonged to the European People's Party, which also includes the CDU and CSU.
However, the Fidesz MEPs have been non-attached since March.
The parties unite, among other things, the fear of a loss of sovereignty of their countries vis-à-vis the EU.
They are also on the same wavelength when it comes to social issues such as dealing with sexual minorities and rejecting migration.
The AfD is considered an outsider in this spectrum of right-wing parties.