RF Prime Minister Vladimir Putin arrived for a working visit to Ankara, Turkey on the invitation of Turkish Prime Minister Recep Tayyip Erdogan. The PMs will have a tête-à-tête meeting, with further participation in Russian-Turkish delegations’ discussions. After the meeting with his Turkish counterpart, Putin will meet with Turkish President Abdullah Gul. As reported earlier, the cooperation in energy sector will be the main subject of the talks. The sides will discuss South Stream, Blue Stream-2 and Nabucco projects. Prime Minister of Italy Silvio Berlusconi will join Putin-Erdogan negotiations in Ankara.