Russian President Vladimir Putin will visit Istanbul on November 19, his aide said on Monday, according to Anadolu Agency.

Putin and Turkish President Recep Tayyip Erdogan will attend a ceremony of the completion of TurkStream gas pipeline’s offshore section, Yury Ushakov told journalists.

The TurkStream project is an export gas pipeline set to cross beneath the Black Sea from Russia to Turkey and also further extend to Turkey’s borders with neighboring countries.

TurkStream’s first line will carry 15.75 bcm of natural gas to Turkey. The project will have a capacity of 31.5 bcm with a second line that will go to Europe.