Communication seems to focus on the act of delivering information but not on whether it was received or understood. Oxford dictionary has only a sub-note referring to the success of communication and Webster's has no mention at all! Successful communication also does not necessarily require information to have been received but only that it be well delivered.
I want a word that means the successful transmission, reception and understanding of an idea by means of communication.
This isn't my particular usage case but the right word could summarize the idea that were everyone in the world to communicate in such a way that they fully understood each other's ideas then there would be no war. e.g.
"If everyone blank, there'd be no war."
The word communication falls miserably short in this context because obviously there is a lot of communication happening but there's insufficient reception and understanding of what has been communicated, even among speakers of a common language because of varying backgrounds, regional word connotations, idiolects and a whole slew of other problems.
This question went kind of the right direction but didn't get where I want to go: What is the difference between interaction, communication, conversation, and discussion?
Whatever this word is, it's key to the success of any and every relationship. Maybe relationships fail because we don't have a word that describes what we're lacking.. (not an invitation for migration to philosophy.stackexchange!)