what are the sources of risk

Human Created: Business cycles, Inflation, Change in the government policies & wars.

Unforeseen Natural Phenomena: Disturbance in the weather like flood, drought, Cyclones & Earthquakes.

Other Sources: Long term economic growth, technological innovation that render existing technology obsolete.

Government Rules & Regulations: When the Government bans something or imposes some heavy duties & taxes on the turnover; it leads to decrease in the demand of goods & services.

Foreign Exchange Rate: It creates imbalances in the balance of payment as well as make favorable or unfavorable in the net business (export & Import) of goods & services from aboard.