During Vladimir Putin's first foreign visit since his election last month, the Russian and Turkish presidents have agreed to broaden military cooperation, and officially launched the construction of a nuclear power plant.
On Wednesday, they will join Iranian President Hassan Rouhani to discuss Syria.
Turkey and Russian Federation have forged burgeoning ties in recent months on a number of areas including energy as well as the Syrian crisis, despite differences on key policy areas.
Russia has confirmed the decision to speed up the supplies of Russian S-400 surface-to-air missile systems to Turkey, President Vladimir Putin announced at the press conference following the Russian-Turkish talks in the Turkish capital.
TWF is the sovereign wealth fund of Turkey and was established in 2016.
Turkey was furious at U.S. support for such groups and has since launched an all-out offensive against them, starting in Afrin province.
Turkey's relations with the United States have fared even worse, with Turkey accusing Washington of harboring the cleric, Fethullah Gulen, and backing Syrian Kurdish militia that Turkey considers to be terrorists.
While EU powers have rushed to join Britain in condemning Russian Federation and expelling diplomats over the attack on Skripal, Turkey has been much more circumspect.
Turkish companies have been put off by the size of the financing required as well as by concerns they will not receive a sufficient share of the lucrative construction side of the deal, two industry sources have said.
Erdogan and Putin met eight times past year and regularly speak on the phone.
Despite being on different sides of the Syrian civil war, key regime backers Russian Federation and Iran have joined with rebel-supporting Turkey to boost peace and also influence when the conflict ends. Moscow and Tehran have backed Syrian President Bashar Assad, while Turkey has supported the forces seeking to unseat him. RDIF acts as a catalyst for direct investment in the Russian economy.
Taking into account statistics of past years, Turkey is quite likely to quicken sunseed imports still more in the latter half of the season once inventories of own production get exhausted, reportsUkrAgroConsult.