Nazi jibes

Germany warns Turkey over Nazi jibes amid referendum row

But Sigmar Gabriel also emphasised his wish to return to "friendly relations".

President Recep Tayyip Erdogan has accused Germany of "Nazi practices" because of the cancellation of rallies involving Turkish ministers.

He is seeking new constitutional powers in a 16 April referendum.

Foreign Minister Mevlut Cavusoglu repeated the Nazi comparison on a visit to Hamburg aimed at drumming up support among some of the 1.4m Turkish voters who live in Germany.