Turkey's President Recep Tayyip Erdogan lost a German court battle against a top media boss Tuesday when his appeal in a bitter row over free speech was thrown out.

Germany's parliament votes Thursday on a resolution that brands the massacre of Armenians by Ottoman forces as genocide, drawing a clear warning from Turkey's president that it would harm ties.

German Chancellor Angela Merkel will raise concerns over democracy in Turkey when she meets President Recep Tayyip Erdogan next week, her spokesman said Friday, as Ankara began a final vote on a contentious bill lifting parliamentary immunity.

"For the domestic stability of every democracy, it is important for every relevant group in society to be also represented in parliament. The situation will certainly be raised by the chancellor on the sidelines of the humanitarian summit with Turkey's president," said Steffen Seibert.

Turkish President Recep Tayyip Erdogan on Sunday lashed out at Europe's silence over the execution of a veteran Islamist leader in Bangladesh, accusing the West of "double standards."

Turkish President Recep Tayyip Erdogan on Tuesday said he wanted the European Union to grant Turks visa-free travel to the passport-free Schengen area by October at the latest.

President Recep Tayyip Erdogan on Monday expressed hope a deal set to grant Turks visa-free travel to the EU's passport-free Schengen area would help accelerate Turkey's long-running membership bid to join the bloc.

President Recep Tayyip Erdogan on Friday warned the EU that Turkey would not change an anti-terror law for the sake of a deal on visa-free travel and migrant flows, throwing up a major potential stumbling block a day after his prime minister said he was stepping down.

In a typically combative speech just 24 hours after Prime Minister Ahmet Davutoglu said he would surrender his positions of premier and ruling party chief, Erdogan vowed to put to a referendum his controversial plan of a presidential system in Turkey as "quickly as possible".

Turkish President Recep Tayyip Erdogan on Thursday urged dozens of Muslim leaders gathered for a summit in Istanbul to end sectarian divisions in the Islamic world and join forces to fight terror.

Turkey is seeking to showcase its influence among the world's estimated 1.7 billion Muslims, particularly in lands once controlled by the Ottoman Empire, at the two-day summit of the Organization of Islamic Cooperation (OIC) which it will chair for the next two years.

Turkish President Recep Tayyip Erdogan on Wednesday accused Russia of siding with Armenia in the resurgent conflict with Azerbaijan over the disputed territory of Nagorny Karabakh, saying Moscow was meddling as it had in Ukraine and Syria.

Erdogan's comments are likely to further fuel tensions between Turkey and Russia, whose relations drastically deteriorated after Ankara downed a Russian warplane near the Syrian border in November.

Turkish President Recep Tayyip Erdogan on Tuesday suggested that supporters of Kurdish rebels locked in conflict with government troops should be stripped of their Turkish citizenship.

"To prevent them from doing harm we must take all measures, including stripping supporters of the terrorist organization of their citizenship," Erdogan said in a speech in Ankara, referring to the outlawed Kurdistan Workers Party (PKK).