From Conflict of Nations Wiki
Your diplomatic relations are pivotal to securing victory for your nation. Will you negotiate a short-term peace treaty with your neighbours? Or are you going to form a long-term coalition to dominate the world as a team? The game currently offers five diplomatic standings.
This relation allows two players to share gathered intelligence. Grants each other access to intel gathered via the intel panel.
The peace relation is ideally used as a stepping stone towards a deeper diplomatic relationship with another nation. This is purely a gesture and does not affect game mechanics.
Right of Way
Right of way allows players to move units through each other's territory, including air lifts and refuelling via airports.