Chancellor Angela Merkel on Friday rejected Ankara's accusations that her government had a hand in scrapping Turkish rallies in two German towns backing President Recep Tayyip Erdogan's bid for greater powers.

Turkey on Wednesday threatened to strike Syrian Kurdish militia forces if they do not withdraw from Manbij, a former bastion of the Islamic State (IS) group that has been taken over by predominantly Kurdish forces.

Turkish police on Sunday detained hundreds of suspected members of the Islamic State extremist group in nationwide raids, just over a month after an attack on an Istanbul nightclub claimed by the jihadists.

Greece's Supreme Court on Monday postponed an expected ruling on whether to extradite eight Turkish officers sought by Ankara over July's failed military coup against President Recep Tayyip Erdogan.

Russia and Turkey on Wednesday staged their first joint air strikes against the Islamic State jihadist group in Syria, the Russian defense ministry said.

The Turkish lira, pounded by higher-than-expected inflation and security fears, hit record lows against the dollar on Monday after a gloomy Moody's statement.

Turkey on Monday urged the European Union to revive stalled negotiations on Ankara joining the bloc, saying without it Europe was "incomplete" and calling for visa-free travel for its citizens immediately.

The Islamic State jihadist attack on an Istanbul nightclub that killed 39 people aimed to polarize Turkish society, President Recep Tayyip Erdogan said on Wednesday.

Turkey and Russia are planning to implement a countrywide ceasefire in Syria before the start of the New Year, Turkish Foreign Minister Mevlut Cavusoglu said Thursday.

Turkey on Tuesday said it had no confirmation of a video published by Islamic State (IS) jihadists purportedly showing the burning to death of two Turkish troops captured in Syria.

After users in Turkey reported problems using social media in the wake of the release of the video, Deputy Prime Minister Numan Kurtulmus said some media needed to "watch their step" in the face of attempts by terror groups to spread fear.