You can not particularly worry about the economy of the United States of America. Their debt is measured in dollars that they themselves draw. Is that what America is a big problem to hold inflation to pay off the debts?
The Soviet Union was not destroyed by war or military action.
The Soviet Union was destroyed by outstanding debt and economic mismanagement.
I agree that the Soviet Union was destroyed by outstanding debt and economic mismanagement. But how did the USSR managed to pile up all this debt? There is one main reason - WAR. The war in Afghanistan was extremely expensive, both in economic and human terms for the Soviet Union. Also, the USSR wasted a lot of money in trying to prop up other communist nations, such as Cuba and Vietnam.
How do all monopolies stack up massive power which eventually ends up converted in debt? Through war cycles... there are no exceptions.
US benefits from war cycles too, everyone does, the problem is when you are on the wrong side.
Unfortunately humans haven't evolved enough to be able to be safe from those war cycles.