Turkey has vowed to take further measures after Germany's lower house of parliament passed a resolution to label as genocide the killings of Armenians by Ottoman Turks a century ago.
Turkey has already recalled its ambassador in Berlin for consultations following the vote on June 2.
Speaking on June 3, Turkish Prime Minister Binali Yildirim said that Germany had made a “historic” error, which it should rectify.
However, he did not specify what further measures Ankara may take, and added that no one should expect bilateral ties to “deteriorate entirely.”
Historians estimate that up to 1.5 million Armenians were killed by Ottoman Turks around the time of World War I, an event viewed by many scholars as the first genocide of the 20th century.
Turkey disputes the description. It says the toll has been inflated and considers those killed victims of a civil war.