How would the economies of saudi arabia and iraq be affected if people in other countries stopped using as much oil as they do today?

Consumption of oil would negatively affect Saudi Arabia's and Iraq's economy.

Currently, Oil make up around 40% of Saudi Arabia's Gross Domestic Product, and around 60% of Iraq's Gross domestic product. This means that both of these countries are heavily depended on oil for their national income.

If other countries stopped using as much oil as they do, a lot of oil companies in both of these countries would be forced to cut down the total amount of their workers.

This would lead to an increase in Unemployment and a decrease in average disposable income for the citizen.