I am not trying to inflict fear but I am just thinking of how significant US's decisions are to the rest of the world. It's crazy that US has this much effect on the world. What we are experiencing now is something history books will be studying. The global economy will never be the same after this.
From history we can see, in terms of the world economy I am more afraid of Iran than the US, where the US has no role or access to blockade the world economy, the US from century to century has only relied on military power and dollars.
But today's Persia, Iran, has been feared from century to century, Rome, Greece, etc., economic collapse and war in the hands of Persia/Iran, they have an access blockade that shuts down the global economy, the world's main economic and trade power is Iran.
Significantly in my view the impact of the US and Iran war is not dangerous for the US, in fact Iran is more dangerous for the world economy, they have mines in the Strait of Hormuz which paralyze all sectors of the world economy, global oil and inflation or other sectors such as disasters and disruptions to global energy supplies, if that happens the global economy is paralyzed, Asia, Europe, Rome, Greece die.