What if it was an event where they rallied nearly the entirety of the world apart from the US to cease trading with the US, confiscated or froze US assets abroad, and made threats that their media generally described as "cratering the US economy"? If this resulted in a Great Depression level of death and suffering in the US (which seems to be what our leadership is hoping for in Russia), would you still be inclined to see it as more akin to a minnow like Saudi Arabia unilaterally refusing trade than to killing random US citizens?

(On that matter, the last major instance of another country confiscating Western assets I'm aware of was the https://en.wikipedia.org/wiki/Anglo-Persian_Oil_Company, which was answered with a CIA-instigated coup.)