0321 GMT November 21, 2019
Iranian Navy Commander Rear Admiral Hossein Khanzadi signed the agreement in the Russian city of Saint Petersburg along with his Russian, Azerbaijani, Kazakh and Turkmen counterparts on Friday, Press TV reported.
Khanzadi also held separate meetings with the navy commanders of Russia, Azerbaijan and Kazakhstan.
The Iranian navy chief said that a joint military exercise planned between Russia and Iran will be held in the near future.
"We hope that the exercise can take place in the Indian Ocean until the end of this year," he said, referring to the end of the Persian calendar, which corresponds with mid-March next year.
Khanzadi said that the exercise seeks to increase "combat readiness" and achieve "collective security in specific areas".
"When two or more countries hold a military exercise, it signifies that an extensive level of agreement and cooperation exists between them," he added.
Last month, Iran announced plans to conduct joint naval drills with Russian and Chinese military forces in international waters of the Indian Ocean and the Sea of Oman.
Speaking on Friday, however, Khanzadi did not mention whether the joint drills planned with Russia are part of the previously announced tripartite drills or not.