Iran's President Mahmoud Ahmadinejad was due in Turkey Thursday where he was expected to sign a new gas pipeline deal in a demonstration of the improved ties between the Islamic Republic and the NATO ally. The two-day visit is Ahmadinejad's first to Turkey since he came to power in 2005. He was scheduled to meet with his counterpart Abdullah Gul in Istanbul. Relations have improved between Iran and Turkey's Islamic rooted leadership, which took power in 2002. Earlier Turkish governments accused Iran for decades of trying to export its radical Islamic regime to secular Turkey, which is aspiring to join the European Union.