If you believe that argument to have merit, then answer the following:
What is the exact dollar amount of debt necessary for US spending to reach catastrophic levels?
While you're contemplating that, consider for a moment that you're still discussing an increase of debt as though it would exist in a vacuum:
A Cascade Effect is an unforeseen chain of events due to an act affecting a system. If there is a possibility that the cascade effect will have a negative impact on the system, it is possible to analyze the effects with a consequence/impact analysis. Cascade effects are commonly visualised in tree structures, also called event trees.
Higher gas prices will lead to slower economic growth and would also have the potential to drag our economy into a recession or even depression. The worse the economy gets, the less revenue government collects, the less revenue going to government, the higher the deficits. Since we're already adding to the deficit with a new war, on top of our current wars, and in addition to all the other new deficit spending our government would deem necessary to get us through this "crisis" (more rounds of stimulus, bailouts, welfare etc), deficits hit a new record high. Record deficits continue to add to our record debt, pushing us farther, and faster, towards that mysterious numerical value of total fiscal insolvency.
Meanwhile, in an attempt to compensate for the new record deficits and debt, the Fed expands it's current policy of monetizing our debt. Basically, we just inflate our currency to pay the bills. Of course the rest of the world is watching as we intentionally devalue the US dollar, so they lose faith in the dollar as the gold standard of currency and drop it. The trillions of dollars currently circulating throughout the world thanks to the Feds record QE programs would come back to the US and it's only then Americans would actually see just how much their currency has been devalued through inflation. The feds only two means for fighting inflation is through manipulation of the interest rates, in the belief higher rates reduce inflation (the rates were as high as 20% under Carter, to fight inflation, which led to stagflation), and the destruction of currency to reduce the money supply.
In economics, stagflation is a situation in which the inflation rate is high and the economic growth rate slows down and unemployment remains steadily high. It raises a dilemma for economic policy since actions designed to lower inflation or reduce unemployment may actually worsen economic growth.
M2: Represents money and "close substitutes" for money.M2 is a broader classification of money than M1. Economists use M2 when looking to quantify the amount of money in circulation and trying to explain different economic monetary conditions. M2 is a key economic indicator used to forecast inflation.
At best the economy is flat. Wages are stagnant. Prices are skyrocketing. Unemployment is on the rise. The public who was already holding angry demonstration about the new war is now rioting in the streets and engaging in open conflicts with police and other government authorities demanding "change".
Can't happen here, right? ... At least not any time in the near future... That's the hope anyway. The United States is special, but we're not that special. What I've just described has happened repeatedly throughout history, Rome, Weimar, Zimbabwe, and even more recently in Greece. As I said, we're already traveling at record speeds towards insolvency, so it's not that fanciful to believe the repercussions of becoming engaged in another ground war in the ME will shift us into an even higher gear and propel us that much faster toward the inevitable... But so could a lot of other factors.
Now having said all that, I agree, it's purely academic to contemplate a US invasion of Iran at this point as that's probably not going to happen any time soon. However, we will eventually run out of delay tactics and/or once again fall for some bit of misinformation that finally tips the scales and convinces the public that we have to put boots on the ground in order to quell atomic paranoia and achieve the serenity of 100% certainty.
