This Civic prevents you from engaging in diplomacy with other species. It also does not allow access to the Galactic Market and will force Xeno Pops to be purged. However, this will unlock the Purification Casus Belli on other species, the ability to gain Unity from purging Pops, and the ability to use the Armageddon bombardment Stance. On top of that, you will be rewarded with a +33% Ship Fire Rate, +33% Army Damage, -15% Ship Build Cost, and a +33% Naval Capacity.