The IRGC published a list of “natural forces” (wind, earthquakes, volcanic activities, drought, flood, tsunami, wild fire, avalanche), although it separated biological, chemical, and physical agents...

The IRGC published a list of “natural forces” (wind, earthquakes, volcanic activities, drought, flood, tsunami, wild fire, avalanche), although it separated biological, chemical, and physical agents (such as radiation) that could be regarded as natural.