Vega Proxima was a planet in the galaxy's Alpha Quadrant, in or near Federation space. Vega Proxima was inhabited by a civilization of Vega Proxima natives with some technological refinements. By the 23rd century, the planet was in the midst of an era of nuclear weapons.
On reference stardate 1/2803, Vega Proxima was in a state of war. Two major organizations of nation-state governments had begun an escalation that led to the launch of a nuclear weapon missile. A Federation starship was in orbit observing the world at the time, and Starfleet Captain James Smithson took initiative to use his ship's laser weapons to detonate the launch before casualties occurred. Because he violated the Prime Directive in saving Vega Proxima, Smithson was court-martialed, the first Starfleet officer to face such a tribunal for a Prime Directive violation. (FASA RPG module: The Federation)