Opinion Presidents Hassan Rouhani of Iran, Tayyip Erdogan of Turkey and Vladimir Putin of Russia pose for a picture after a news conference during their meeting in Ankara, Turkey, September 16, 2019. Photo: Pavel Golovkin/Pool via REUTERS. In the wake of the Second Karabakh War, Iran now finds itself facing Turkey’s growing influence north of its border. Ankara gained a corridor through Armenian territory, potentially anchoring itself in the Caspian region. This will represent a major challenge for Iran, which (together with Russia) has viewed the Caspian region as within its sphere of infl...