To avoid war, you must engage in diplomacy.
To engage in diplomacy, you must be able to negotiate.
To negotiate, you must be able to cite common interests.
To cite common interests, you must cite common truths.
To cite common truths, you must observe a shared reality.
We do not have a shared reality with the left.
You cannot give these people power. Words don't mean the same things to them. We share a vocabulary, but we don't share a dictionary.