伊朗-俄罗斯联合海军演习将于21日在里海举行

Group 1 - The joint naval exercise hosted by Iran will take place in the Caspian Sea starting on the 21st of this month, lasting for three days [1] - The theme of the exercise is "Together Building a Safe Caspian Sea," emphasizing cooperation among Caspian Sea coastal nations [1] - Observers from Russia and other Caspian Sea bordering countries will participate in the exercise, aimed at enhancing maritime security and naval interaction [1]