Iran has proposed to Turkmenistan to develop transport and transit cooperation by combining the capabilities of the Caspian Sea ports, said Iran's ambassador to Turkmenistan Ali Mojtaba Rouzbehani. Connecting the capabilities of this port with Iranian ports on the Caspian Sea coast, including the ports of Bandar-e Anzali, Amirabad and Caspian, can help increase trade exchange, develop multimodal transportation and strengthen the role of the Caspian Sea in regional transport corridors," the diplomat said in a material dedicated to the International Day of the Caspian Sea, which was distributed by the Iranian embassy in Ashgabat. According to Rouzbehani, one of the most important areas of cooperation is also the falling water level of the Caspian Sea and the need for close cooperation between all Caspian littoral states, in particular Iran and Turkmenistan. Civilizational diplomacy of the Caspian Sea involves using the historical, cultural and human potential of the region to deepen mutual understanding and strengthen trust between coastal societies," the ambassador concluded. The International Caspian Sea Day is celebrated annually on August 12.