Turkish President Recep Tayyip Erdogan has described the Dutch government as "Nazi remnants and fascists", amid a diplomatic row over a cancelled rally.
Turkey's family minister was blocked from entering the Turkish consulate in Rotterdam as the spat between the two nations worsened on Saturday.
Dutch Prime Minister Mark Rutte said Mr Erdogan's remark was "way out of line".
Earlier, a rally in the city due to be hosted by the Turkish foreign minister was banned for security reasons.
Turkey has summoned the Dutch charge d'affaires to the foreign ministry in Ankara for an explanation.
Foreign Minister Mevlut Cavusoglu had been hoping to harness the votes of the Turkish diaspora in the Netherlands, home to some 400,000 Turks, ahead of a referendum in Turkey next month on whether to expand Mr Erdogan's powers.
Austria, Germany and Switzerland have banned similar gatherings where Turkish officials were due to speak.
http://www.bbc.com/news/world-europe-39242707
