Tiberium world

"GDI and the Brotherhood view the benefits... and the threats of Tiberium differently. They see a scientific anomaly, a curiosity. I see the future. In their stubborn ignorance, they continue to try and forestall this future. - Kane"The world spins around Tiberium. The mysterious crystalline substance that arrived into our star system from far reaches of the galaxy. According to GDI, Tiberium was named after the Tiber river, the site of the meteor impact that first brought the alien substance to Earth. However, Kane claimed that Tiberium was discovered by the Brotherhood of Nod, and that he personally named it after the Roman Emperor Tiberius.

Tiberium was the point of contention since the beginning, sparking three global wars between the GDI, NOD and Scrin were involved during the last one as well. Fighting continues up to this day, no major war so far, but there is no peace either. GDI and NOD forces engeage each other when they can and Scrin ships still roam the space between planets of our star system.

Wast emptiness of space is the only thing preventing the full scale war between the two factions. Each have plenty of space to expand. But that can easily change, it might not take much at all to spark the fourth tiberium war.