So he's basically saying that any flights from Holland will be refused landing.
I doubt that it will come to that. When RTE calms down a bit there will be a few token landing refusals for Dutch diplomats at the Ankara embassy. So far, the Dutch Ambassador to Turkey, who is currently on holiday, has been told not to come back for a while. Far nastier is the threat from the Turkish Foeign Ministry that "
the Dutch-Turkish community will cause serious problems diplomatically, politically, economically and in other areas" . That seems likely to crank up pre-election tension in the Netherlands.