In today's world, it's hard for truly powerful nations to break out in war, because once they start, the scale is too large, the losses too heavy, and no one can bear it.
So powerful nations engage in a different sort of warfare, namely financially and through trade. Sometimes, to destroy a place, you don't need airplanes or artillery; simply destroying the local economy is enough.
To wage a financial and trade war, currency is the most powerful weapon. Therefore, this can also be called a currency war.
One thing that international financiers like to do is to strike at a particular locality's currency and make a fortune from it. Now, these international financiers have set their sights on the currency of Star Country.
To target a place's currency, there must be basic conditions: first, the place does not have much foreign exchange reserves; second, the economy of the place is overheating.