Lord Zack's Space Opera
The Interstellar Consortium is a collection of races unified into a single government, much like the United Federation of Planets. They have had a history as peacekeepers, however in the late 23rd and early 24th centuries they became more like other empires. Still, there are those within the ISC who are devoted to keeping the peace. This element was galvanized by the Khitomer Accords between once fierce enemies in the Federation and Klingon Empire and by the late 24th Century the ISC Peacekeepers became a strong faction once again. This faction also had an influence on the Federation, influencing it to be more peaceful itself. Nowadays the ISC and Federation have close ties.
After contact was made with the Dominion, the ISC made efforts to prevent a war. Unfortunately they failed and war came. The ISC remained neutral during the war, though some factions wanted to support the Alpha Quadrant Alliance, while others wanted to ally with the Dominion seeing them as the best hope for peace and order in the Alpha Quadrant. After the war the ISC sent aid to help rebuild worlds devastated by the conflict, even Cardassia. They have recently had encounters with scout ships of the Galactic Empire violating their borders.