In a post on his Twitter account on Friday night, Mousavi published a photo of the logo of the naval drills and said, “As @JZarif stated once "The fact is that in the current transitional era, not everything happens in, nor by the West.
“We are truly living in a #Post_Western_world in which all global players have their share in its reality,” he added in his tweet.
Iran, Russia, and China began their joint naval drills on Friday, according to the deputy commander of the Iranian Navy.
The three countries are holding the four-day joint naval exercise, dubbed Marine Security Belt, in the Indian Ocean and the Gulf of Oman.
On Wednesday, Brigadier General Abolfazl Shekarchi, the spokesman for Iranian Armed Forces, said the event is meant to promote the security of international trade in the strategic regions, adding that sharing experience in maritime rescue operations was also to be pursued in the maneuvers.
On Thursday, Chinese Defense Ministry spokesman Wu Qian announced that Beijing's Xining guided-missile destroyer would take part in the drills. Three Russian vessels are also taking part in the drills, according to reports.
The war game comes amid US efforts to woo countries into a maritime coalition for patrols in the Persian Gulf, which have received lukewarm welcome from its allies.