Diplomacy

From OGame Wiki

The act of maintaining relations between alliances. These can be friendly for example the alliances have a NAP and conduct trade or hostile the alliances attack each other and this may escalate to war

Many alliances have a Diplomat (see ranks) who is responsible for maintaining dialogue between the parties when there is a war to ensure demands are met and negotiate the terms of surrender.

Diplomats are also useful during peacetime as maintaining good terms with partner alliances can expand the influence and reputation of an alliance and increases the chances that in case of war you will have extra backup and support, thus increasing the likelihood that you will win in a war situation