Marine Security Belt,[a] also known with the portmanteau CHIRU, is a trilateral naval exercise involving China, Iran and Russia as partners.
2020 It was canceled due to the epidemic of the COVID-19 virus China was absent in the second version of the exercise when it was started by Russia and Iran on 16 February 2021.
On 18 February 2021, the official website of the Indian Navy issued a statement denying participation in the drill.
[4] Turkish state-run Anadolu Agency reported that the Indian Navy had cancelled the plan at the last minute, because Tehran said China could join the exercise too and Indians did not want to be together with the Chinese due to recent border skirmishes.
2023 The fourth edition of the exercise was held from March 15 for 4 days in the northern Indian Ocean.