In the "Shield of the Prophet" DLC, you can become an active participant in the alternative history of the Soviet invasion into Afghanistan in 1979.

The premise is as follows:
Iran's leadership is beginning to develop a plan of "exporting the Islamic revolution" in Afghanistan.
Taking advantage of the weakness of the central government of Afghanistan and the favorable geopolitical situation, in June 1979, Iran began a full-scale military invasion into the border provinces of Afghanistan.

In response, the Soviet Union began mobilizing the armed forces in Afghanistan, in order to prevent the overthrow of the pro-Soviet government in Afghanistan.

The war begins between Iran and the Soviet Union for the control of Afghanistan ...