The International Army Games 2021 will be held in Russia, Iran and China.
The diving tournament will be held in Iran from August 22 to September 2 with 100 participants from six countries.
This is the third time that Iran is hosting the diving games.
The competition among the air defense missile forces will be held in China's Xinjiang.
Troops from China, Iran, Russia, Venezuela and other states have also traveled to Russia's Vladivostok to take part in combat vehicle driving, weapons operation and cooperative ability in crossing obstacles.