Treaty of Farixen

The Treaty of Farixen is a treaty limiting the number of dreadnoughts among the different Citadel races. At the Farixen Naval Conference, the Council races agreed to fix a ratio of dreadnought construction between themselves due to their destructive potential. At the top of the pyramid is the peacekeeping turian fleet which makes up most of the Citadel Fleet, then the asari and the salarians. Council associate races, like the human Systems Alliance, are at the bottom.

The ratio of turian to Council to associate dreadnoughts is 5:3:1, which basically means for every dreadnought the humans are permitted to build, the asari have three, and the turians five.

Signing the Treaty of Farixen is a requirement for any race wishing to open an embassy on the Citadel.

Real Life Basis
This is almost certainly based off the Washington Naval Treaty, between the U.S., Great Britain, Japan, France, and Italy, limiting these states to capital ship tonnage ratios of 5:5:3:1:1, respectively. It was an attempt at maintaining the balance of power and the peace after World War I. The treaty ended with the advent of World War II.

Trivia
The treaty itself may be named after Firaxan sharks from Star Wars Knights of the Old Republic.