- When currency values and exchange rates change due to variations in supply and demand, it affects a country's imports and exports. A stronger domestic currency makes imports cheaper and exports more expensive, hurting the trade balance. - Oil-producing Gulf countries like Saudi Arabia face budget deficits as lower oil prices reduce revenues and economic growth. Saudi Arabia has enough reserves to maintain spending for 5 years but is trying to cut costs. Other GCC nations like UAE and Qatar are in better financial conditions. - Saudi Arabia may devalue its currency to boost exports, reduce the trade deficit, and repay sovereign debt more quickly. However, lower oil prices and reliance on oil exports pose sustainability challenges that require diversifying economic sources.