Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Putin to Visit Istanbul Amid Increasing Differences Over Syria, Libya Dorian Jones ISTANBUL - Russian President Vladimir Putin is visiting Istanbul Wednesday, where he will meet his Turkish counterpart Recep Tayyip Erdogan. Bilateral relations have dramatically improved much to Ankara's western allies' concern, but escalating regional differences threaten to sour those bilateral ties. Putin is officially going to Istanbul to inaugurate a key new gas pipeline between Russia and Turkey. The Turk Stream pipeline will supply Istanbul with Russian gas. "This ceremony tomorrow will mark a new beginning of Russian gas supply increasing to Turkey and European markets," says Mehmet Ogutcu, head of the London Energy Club. Turkey, as a market and transit country for Russian energy, is widely seen as the bedrock of deepening bilateral ties. .