A US border patrol agent fired into Mexico and killed a child. The US protected the agent, and Mexico responded with a strongly worded letter[0]. I don't see an

A US border patrol agent fired into Mexico and killed a child. The US protected the agent, and Mexico responded with a strongly worded letter[0]. I don't see any reason to believe the US would have responded with more than that either if the roles had been reversed. Most governments are perfectly capable of avoiding escalations that will lead to wars they don't want. The wars following 9/11 were wars the US government wanted and would have gotten with or without 9/11. [0]: https://www.bbc.co.uk/news/world-latin-america-51643636 https://www.bbc.co.uk/news/world-latin-america-51643636