President Joseph Copland of the Atlantic Federation sends a list of demands to the PLANT Supreme Council, who is blamed for harboring the terrorists committing the colony drop, even though the perpetrators are killed. The demands require PLANT to dismantle its military, dismiss the current PLANT Supreme Council and to submit to Earth Alliance inspectors. Chairman Durandal wishes to find a diplomatic solution, but the Earth Forces begin deploying military units and PLANT is forced to man its defense line. Before the ultimatum expires, the Earth Alliance attacks the PLANTs, officially starting the Second Bloody Valentine War.
In the fictional Cosmic Era (CE) timeline of the Gundam metaseries, the Bloody Valentine War is a war that began due to hostilities between the Earth Alliance, an alliance of four major governments on Earth, and PLANT, a nation of space colonies located at Lagrangian point 5. This conflict is covered in the anime series, Mobile Suit Gundam SEED. Although integral to the plot, the war is never referred to as the "Bloody Valentine War" in the series.