>> Touching down in Germany for a three day state visit, Turkey's President, Tayyip Erdoğan, will be hoping to ease tensions. While relations may be strained, the two countries need each other. Chancellor Angela Merkel needs Turkey to stem the flow of migrants into Europe, while Erdoğan needs help with his struggling economy.
Reuters correspondent, Thomas Eskritt, is covering the visit in Berlin.>> For the German side, the crucial aim is to secure the release of dozens of German citizens who are in prison in Turkey on suspicion of involvement with the coup. For the Turkish side, the aim is in particular, to unlock investment, to try and attract German business to go back to Turkey.
Because Turkey is, right now, in a period of real economic crisis.>> Erdogan already raising a contentious issue, urging Berlin to designate the movement of Fethulla Gullen a terrorist organization. Turkey blames his followers for a 2016 failed coup attempt. Germany has so far said it needs more proof.
The difference highlighting the gulf Erdogan must bridge if he is to repair strained political and commercial ties. And he'll have to make sure he's on his best behavior while in the country.>> The entire trip is ringed with intentions of various kinds. In particular, we can expect a lot of noise to be made about the Germans who are in detention in Turkey.
But also, there will be a lot of attention on Erdoğan, who has a track record of attempting to carry out his domestic campaigns while abroad. Campaigning to, for example, a 3 million-strong Turkish ethnic diaspora that lives in Germany. And German officials have warned that that is not on.
> As well as Erdogan supporters, the leader will also be met by protesters. Demonstrators gathering at a Berlin airport even before his arrival, protesting the state of press freedom in Turkey.